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Finding the Fourth Proportional to 1,099,865,369.48, 1,521,811,078.32 and 959,030,066.12

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Solution

The fourth proportional to 1,099,865,369.48, 1,521,811,078.32 and 959,030,066.12 is: 1,326,946,569.61

Step by Step Solution

  1. Step 1: Write the proportion equation
    1,099,865,369.48 : 1,521,811,078.32 = 959,030,066.12 : x
  2. Step 2: Convert to fraction form
    1,099,865,369.48/1,521,811,078.32 = 959,030,066.12/x
  3. Step 3: Cross multiply
    1,099,865,369.48x = 1,521,811,078.32 × 959,030,066.12
  4. Step 4: Simplify right side
    1,099,865,369.48x = 1,459,462,579,063,377,920
  5. Step 5: Solve for x
    x = 1,459,462,579,063,377,920/1,099,865,369.48
  6. Step 6: Final answer
    x = 1,326,946,569.61

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Double scale
Find fourth proportional to 1,099,865,370.48, 1,521,811,079.70 and 959,030,067.12
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1.5x scale

Why These Related Problems?

These problems maintain the same ratio (1.38) or explore similar proportional relationships. Practicing with related ratios helps build understanding of proportional relationships.