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Finding the Fourth Proportional to 363,461.28, 545,036.40 and 126,733.92

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Solution

The fourth proportional to 363,461.28, 545,036.40 and 126,733.92 is: 190,046.65

Step by Step Solution

  1. Step 1: Write the proportion equation
    363,461.28 : 545,036.40 = 126,733.92 : x
  2. Step 2: Convert to fraction form
    363,461.28/545,036.40 = 126,733.92/x
  3. Step 3: Cross multiply
    363,461.28x = 545,036.40 × 126,733.92
  4. Step 4: Simplify right side
    363,461.28x = 69,074,599,514.69
  5. Step 5: Solve for x
    x = 69,074,599,514.69/363,461.28
  6. Step 6: Final answer
    x = 190,046.65

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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.