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Finding the Fourth Proportional to 72,936.60, 109,404.90 and 62,001.60

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Solution

The fourth proportional to 72,936.60, 109,404.90 and 62,001.60 is: 93,002.40

Step by Step Solution

  1. Step 1: Write the proportion equation
    72,936.60 : 109,404.90 = 62,001.60 : x
  2. Step 2: Convert to fraction form
    72,936.60/109,404.90 = 62,001.60/x
  3. Step 3: Cross multiply
    72,936.60x = 109,404.90 × 62,001.60
  4. Step 4: Simplify right side
    72,936.60x = 6,783,278,847.84
  5. Step 5: Solve for x
    x = 6,783,278,847.84/72,936.60
  6. Step 6: Final answer
    x = 93,002.40

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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.