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Finding the Fourth Proportional to 71,481.76, 98,630.56 and 43,187.52

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Solution

The fourth proportional to 71,481.76, 98,630.56 and 43,187.52 is: 59,590.16

Step by Step Solution

  1. Step 1: Write the proportion equation
    71,481.76 : 98,630.56 = 43,187.52 : x
  2. Step 2: Convert to fraction form
    71,481.76/98,630.56 = 43,187.52/x
  3. Step 3: Cross multiply
    71,481.76x = 98,630.56 × 43,187.52
  4. Step 4: Simplify right side
    71,481.76x = 4,259,609,282.61
  5. Step 5: Solve for x
    x = 4,259,609,282.61/71,481.76
  6. Step 6: Final answer
    x = 59,590.16

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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.