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Finding the Fourth Proportional to 71,295.97, 98,381.68 and 42,609.92

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Solution

The fourth proportional to 71,295.97, 98,381.68 and 42,609.92 is: 58,797.65

Step by Step Solution

  1. Step 1: Write the proportion equation
    71,295.97 : 98,381.68 = 42,609.92 : x
  2. Step 2: Convert to fraction form
    71,295.97/98,381.68 = 42,609.92/x
  3. Step 3: Cross multiply
    71,295.97x = 98,381.68 × 42,609.92
  4. Step 4: Simplify right side
    71,295.97x = 4,192,035,514.27
  5. Step 5: Solve for x
    x = 4,192,035,514.27/71,295.97
  6. Step 6: Final answer
    x = 58,797.65

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1.5x scale

Why These Related Problems?

These problems maintain the same ratio (1.38) or explore similar proportional relationships. Practicing with related ratios helps build understanding of proportional relationships.