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Finding the Fourth Proportional to 71,073.59, 98,081.60 and 39,242.48

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Solution

The fourth proportional to 71,073.59, 98,081.60 and 39,242.48 is: 54,154.64

Step by Step Solution

  1. Step 1: Write the proportion equation
    71,073.59 : 98,081.60 = 39,242.48 : x
  2. Step 2: Convert to fraction form
    71,073.59/98,081.60 = 39,242.48/x
  3. Step 3: Cross multiply
    71,073.59x = 98,081.60 × 39,242.48
  4. Step 4: Simplify right side
    71,073.59x = 3,848,964,539.75
  5. Step 5: Solve for x
    x = 3,848,964,539.75/71,073.59
  6. Step 6: Final answer
    x = 54,154.64

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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.