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Finding the Fourth Proportional to 73,129.90, 109,731.30 and 41,564.20

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Solution

The fourth proportional to 73,129.90, 109,731.30 and 41,564.20 is: 62,367.02

Step by Step Solution

  1. Step 1: Write the proportion equation
    73,129.90 : 109,731.30 = 41,564.20 : x
  2. Step 2: Convert to fraction form
    73,129.90/109,731.30 = 41,564.20/x
  3. Step 3: Cross multiply
    73,129.90x = 109,731.30 × 41,564.20
  4. Step 4: Simplify right side
    73,129.90x = 4,560,893,699.46
  5. Step 5: Solve for x
    x = 4,560,893,699.46/73,129.90
  6. Step 6: Final answer
    x = 62,367.02

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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.