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Finding the Fourth Proportional to 71,659.35, 107,613.77 and 66,026.48

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Solution

The fourth proportional to 71,659.35, 107,613.77 and 66,026.48 is: 99,154.65

Step by Step Solution

  1. Step 1: Write the proportion equation
    71,659.35 : 107,613.77 = 66,026.48 : x
  2. Step 2: Convert to fraction form
    71,659.35/107,613.77 = 66,026.48/x
  3. Step 3: Cross multiply
    71,659.35x = 107,613.77 × 66,026.48
  4. Step 4: Simplify right side
    71,659.35x = 7,105,357,564.43
  5. Step 5: Solve for x
    x = 7,105,357,564.43/71,659.35
  6. Step 6: Final answer
    x = 99,154.65

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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.