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Finding the Fourth Proportional to 239,761.13, 330,875.34 and 132,330.90

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Solution

The fourth proportional to 239,761.13, 330,875.34 and 132,330.90 is: 182,619.39

Step by Step Solution

  1. Step 1: Write the proportion equation
    239,761.13 : 330,875.34 = 132,330.90 : x
  2. Step 2: Convert to fraction form
    239,761.13/330,875.34 = 132,330.90/x
  3. Step 3: Cross multiply
    239,761.13x = 330,875.34 × 132,330.90
  4. Step 4: Simplify right side
    239,761.13x = 43,785,031,530.01
  5. Step 5: Solve for x
    x = 43,785,031,530.01/239,761.13
  6. Step 6: Final answer
    x = 182,619.39

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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.