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Finding the Fourth Proportional to 72,403.20, 108,475.20 and 62,035.20

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Solution

The fourth proportional to 72,403.20, 108,475.20 and 62,035.20 is: 92,941.76

Step by Step Solution

  1. Step 1: Write the proportion equation
    72,403.20 : 108,475.20 = 62,035.20 : x
  2. Step 2: Convert to fraction form
    72,403.20/108,475.20 = 62,035.20/x
  3. Step 3: Cross multiply
    72,403.20x = 108,475.20 × 62,035.20
  4. Step 4: Simplify right side
    72,403.20x = 6,729,280,727.04
  5. Step 5: Solve for x
    x = 6,729,280,727.04/72,403.20
  6. Step 6: Final answer
    x = 92,941.76

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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.