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Finding the Fourth Proportional to 71,061.63, 98,062.48 and 39,229.85

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Solution

The fourth proportional to 71,061.63, 98,062.48 and 39,229.85 is: 54,135.77

Step by Step Solution

  1. Step 1: Write the proportion equation
    71,061.63 : 98,062.48 = 39,229.85 : x
  2. Step 2: Convert to fraction form
    71,061.63/98,062.48 = 39,229.85/x
  3. Step 3: Cross multiply
    71,061.63x = 98,062.48 × 39,229.85
  4. Step 4: Simplify right side
    71,061.63x = 3,846,976,381.03
  5. Step 5: Solve for x
    x = 3,846,976,381.03/71,061.63
  6. Step 6: Final answer
    x = 54,135.77

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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.