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Finding the Fourth Proportional to 18,916,728.61, 26,099,684.71 and 10,653,900.90

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Solution

The fourth proportional to 18,916,728.61, 26,099,684.71 and 10,653,900.90 is: 14,699,341.53

Step by Step Solution

  1. Step 1: Write the proportion equation
    18,916,728.61 : 26,099,684.71 = 10,653,900.90 : x
  2. Step 2: Convert to fraction form
    18,916,728.61/26,099,684.71 = 10,653,900.90/x
  3. Step 3: Cross multiply
    18,916,728.61x = 26,099,684.71 × 10,653,900.90
  4. Step 4: Simplify right side
    18,916,728.61x = 278,063,454,421,585.25
  5. Step 5: Solve for x
    x = 278,063,454,421,585.25/18,916,728.61
  6. Step 6: Final answer
    x = 14,699,341.53

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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.