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Finding the Fourth Proportional to 296,598.72, 444,973.92 and 86,236.66

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Solution

The fourth proportional to 296,598.72, 444,973.92 and 86,236.66 is: 129,377.04

Step by Step Solution

  1. Step 1: Write the proportion equation
    296,598.72 : 444,973.92 = 86,236.66 : x
  2. Step 2: Convert to fraction form
    296,598.72/444,973.92 = 86,236.66/x
  3. Step 3: Cross multiply
    296,598.72x = 444,973.92 × 86,236.66
  4. Step 4: Simplify right side
    296,598.72x = 38,373,063,535.47
  5. Step 5: Solve for x
    x = 38,373,063,535.47/296,598.72
  6. Step 6: Final answer
    x = 129,377.04

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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.