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Finding the Fourth Proportional to 217,294,712.40, 325,942,068.60 and 71,750,737.20

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Solution

The fourth proportional to 217,294,712.40, 325,942,068.60 and 71,750,737.20 is: 107,626,105.80

Step by Step Solution

  1. Step 1: Write the proportion equation
    217,294,712.40 : 325,942,068.60 = 71,750,737.20 : x
  2. Step 2: Convert to fraction form
    217,294,712.40/325,942,068.60 = 71,750,737.20/x
  3. Step 3: Cross multiply
    217,294,712.40x = 325,942,068.60 × 71,750,737.20
  4. Step 4: Simplify right side
    217,294,712.40x = 23,386,583,706,542,976
  5. Step 5: Solve for x
    x = 23,386,583,706,542,976/217,294,712.40
  6. Step 6: Final answer
    x = 107,626,105.80

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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.