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Finding the Fourth Proportional to 71,754.91, 107,478.60 and 58,364.35

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Solution

The fourth proportional to 71,754.91, 107,478.60 and 58,364.35 is: 87,421.44

Step by Step Solution

  1. Step 1: Write the proportion equation
    71,754.91 : 107,478.60 = 58,364.35 : x
  2. Step 2: Convert to fraction form
    71,754.91/107,478.60 = 58,364.35/x
  3. Step 3: Cross multiply
    71,754.91x = 107,478.60 × 58,364.35
  4. Step 4: Simplify right side
    71,754.91x = 6,272,918,140.35
  5. Step 5: Solve for x
    x = 6,272,918,140.35/71,754.91
  6. Step 6: Final answer
    x = 87,421.44

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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.