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Finding the Fourth Proportional to 72,527,999.70, 108,791,999.55 and 72,527,999.70

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Solution

The fourth proportional to 72,527,999.70, 108,791,999.55 and 72,527,999.70 is: 108,791,999.55

Step by Step Solution

  1. Step 1: Write the proportion equation
    72,527,999.70 : 108,791,999.55 = 72,527,999.70 : x
  2. Step 2: Convert to fraction form
    72,527,999.70/108,791,999.55 = 72,527,999.70/x
  3. Step 3: Cross multiply
    72,527,999.70x = 108,791,999.55 × 72,527,999.70
  4. Step 4: Simplify right side
    72,527,999.70x = 7,890,466,110,724,800
  5. Step 5: Solve for x
    x = 7,890,466,110,724,800/72,527,999.70
  6. Step 6: Final answer
    x = 108,791,999.55

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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.