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Finding the Fourth Proportional to 72,400,505.70, 108,600,758.55 and 72,400,505.70

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Solution

The fourth proportional to 72,400,505.70, 108,600,758.55 and 72,400,505.70 is: 108,600,758.55

Step by Step Solution

  1. Step 1: Write the proportion equation
    72,400,505.70 : 108,600,758.55 = 72,400,505.70 : x
  2. Step 2: Convert to fraction form
    72,400,505.70/108,600,758.55 = 72,400,505.70/x
  3. Step 3: Cross multiply
    72,400,505.70x = 108,600,758.55 × 72,400,505.70
  4. Step 4: Simplify right side
    72,400,505.70x = 7,862,749,838,423,599
  5. Step 5: Solve for x
    x = 7,862,749,838,423,599/72,400,505.70
  6. Step 6: Final answer
    x = 108,600,758.55

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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.