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Finding the Fourth Proportional to 3,919,156,778.10, 5,878,735,167.15 and 3,919,156,778.10

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Solution

The fourth proportional to 3,919,156,778.10, 5,878,735,167.15 and 3,919,156,778.10 is: 5,878,735,167.15

Step by Step Solution

  1. Step 1: Write the proportion equation
    3,919,156,778.10 : 5,878,735,167.15 = 3,919,156,778.10 : x
  2. Step 2: Convert to fraction form
    3,919,156,778.10/5,878,735,167.15 = 3,919,156,778.10/x
  3. Step 3: Cross multiply
    3,919,156,778.10x = 5,878,735,167.15 × 3,919,156,778.10
  4. Step 4: Simplify right side
    3,919,156,778.10x = 23,039,684,776,990,756,864
  5. Step 5: Solve for x
    x = 23,039,684,776,990,756,864/3,919,156,778.10
  6. Step 6: Final answer
    x = 5,878,735,167.15

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1.5x scale

Why These Related Problems?

These problems maintain the same ratio (1.50) or explore similar proportional relationships. Practicing with related ratios helps build understanding of proportional relationships.