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Finding the Fourth Proportional to 73,116.60, 109,691.10 and 57,370.20

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Solution

The fourth proportional to 73,116.60, 109,691.10 and 57,370.20 is: 86,068.01

Step by Step Solution

  1. Step 1: Write the proportion equation
    73,116.60 : 109,691.10 = 57,370.20 : x
  2. Step 2: Convert to fraction form
    73,116.60/109,691.10 = 57,370.20/x
  3. Step 3: Cross multiply
    73,116.60x = 109,691.10 × 57,370.20
  4. Step 4: Simplify right side
    73,116.60x = 6,293,000,345.22
  5. Step 5: Solve for x
    x = 6,293,000,345.22/73,116.60
  6. Step 6: Final answer
    x = 86,068.01

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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.