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Finding the Fourth Proportional to 71,805.98, 107,708.97 and 71,702.19

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Solution

The fourth proportional to 71,805.98, 107,708.97 and 71,702.19 is: 107,553.29

Step by Step Solution

  1. Step 1: Write the proportion equation
    71,805.98 : 107,708.97 = 71,702.19 : x
  2. Step 2: Convert to fraction form
    71,805.98/107,708.97 = 71,702.19/x
  3. Step 3: Cross multiply
    71,805.98x = 107,708.97 × 71,702.19
  4. Step 4: Simplify right side
    71,805.98x = 7,722,969,031.64
  5. Step 5: Solve for x
    x = 7,722,969,031.64/71,805.98
  6. Step 6: Final answer
    x = 107,553.29

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1.5x scale

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.