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Finding the Fourth Proportional to 72,464.68, 108,713.38 and 25,717.56

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Solution

The fourth proportional to 72,464.68, 108,713.38 and 25,717.56 is: 38,582.15

Step by Step Solution

  1. Step 1: Write the proportion equation
    72,464.68 : 108,713.38 = 25,717.56 : x
  2. Step 2: Convert to fraction form
    72,464.68/108,713.38 = 25,717.56/x
  3. Step 3: Cross multiply
    72,464.68x = 108,713.38 × 25,717.56
  4. Step 4: Simplify right side
    72,464.68x = 2,795,842,872.95
  5. Step 5: Solve for x
    x = 2,795,842,872.95/72,464.68
  6. Step 6: Final answer
    x = 38,582.15

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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.