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Finding the Fourth Proportional to 71,566.80, 107,350.20 and 65,005.80

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Solution

The fourth proportional to 71,566.80, 107,350.20 and 65,005.80 is: 97,508.70

Step by Step Solution

  1. Step 1: Write the proportion equation
    71,566.80 : 107,350.20 = 65,005.80 : x
  2. Step 2: Convert to fraction form
    71,566.80/107,350.20 = 65,005.80/x
  3. Step 3: Cross multiply
    71,566.80x = 107,350.20 × 65,005.80
  4. Step 4: Simplify right side
    71,566.80x = 6,978,385,631.16
  5. Step 5: Solve for x
    x = 6,978,385,631.16/71,566.80
  6. Step 6: Final answer
    x = 97,508.70

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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.