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Finding the Fourth Proportional to 72,387.70, 108,568.14 and 25,002.70

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Solution

The fourth proportional to 72,387.70, 108,568.14 and 25,002.70 is: 37,499.42

Step by Step Solution

  1. Step 1: Write the proportion equation
    72,387.70 : 108,568.14 = 25,002.70 : x
  2. Step 2: Convert to fraction form
    72,387.70/108,568.14 = 25,002.70/x
  3. Step 3: Cross multiply
    72,387.70x = 108,568.14 × 25,002.70
  4. Step 4: Simplify right side
    72,387.70x = 2,714,496,633.98
  5. Step 5: Solve for x
    x = 2,714,496,633.98/72,387.70
  6. Step 6: Final answer
    x = 37,499.42

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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.