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Finding the Fourth Proportional to 127,337.20, 191,044.20 and 68,201.20

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Solution

The fourth proportional to 127,337.20, 191,044.20 and 68,201.20 is: 102,322.37

Step by Step Solution

  1. Step 1: Write the proportion equation
    127,337.20 : 191,044.20 = 68,201.20 : x
  2. Step 2: Convert to fraction form
    127,337.20/191,044.20 = 68,201.20/x
  3. Step 3: Cross multiply
    127,337.20x = 191,044.20 × 68,201.20
  4. Step 4: Simplify right side
    127,337.20x = 13,029,443,693.04
  5. Step 5: Solve for x
    x = 13,029,443,693.04/127,337.20
  6. Step 6: Final answer
    x = 102,322.37

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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.