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Finding the Fourth Proportional to 72,581,601.60, 108,872,402.40 and 32,192,085.60

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Solution

The fourth proportional to 72,581,601.60, 108,872,402.40 and 32,192,085.60 is: 48,288,128.40

Step by Step Solution

  1. Step 1: Write the proportion equation
    72,581,601.60 : 108,872,402.40 = 32,192,085.60 : x
  2. Step 2: Convert to fraction form
    72,581,601.60/108,872,402.40 = 32,192,085.60/x
  3. Step 3: Cross multiply
    72,581,601.60x = 108,872,402.40 × 32,192,085.60
  4. Step 4: Simplify right side
    72,581,601.60x = 3,504,829,697,538,446
  5. Step 5: Solve for x
    x = 3,504,829,697,538,446/72,581,601.60
  6. Step 6: Final answer
    x = 48,288,128.40

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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.