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Finding the Fourth Proportional to 72,585.60, 108,734.40 and 63,926.40

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Solution

The fourth proportional to 72,585.60, 108,734.40 and 63,926.40 is: 95,762.78

Step by Step Solution

  1. Step 1: Write the proportion equation
    72,585.60 : 108,734.40 = 63,926.40 : x
  2. Step 2: Convert to fraction form
    72,585.60/108,734.40 = 63,926.40/x
  3. Step 3: Cross multiply
    72,585.60x = 108,734.40 × 63,926.40
  4. Step 4: Simplify right side
    72,585.60x = 6,950,998,748.16
  5. Step 5: Solve for x
    x = 6,950,998,748.16/72,585.60
  6. Step 6: Final answer
    x = 95,762.78

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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.