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Finding the Fourth Proportional to 653,909.40, 981,641.70 and 369,826.20

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Solution

The fourth proportional to 653,909.40, 981,641.70 and 369,826.20 is: 555,179.08

Step by Step Solution

  1. Step 1: Write the proportion equation
    653,909.40 : 981,641.70 = 369,826.20 : x
  2. Step 2: Convert to fraction form
    653,909.40/981,641.70 = 369,826.20/x
  3. Step 3: Cross multiply
    653,909.40x = 981,641.70 × 369,826.20
  4. Step 4: Simplify right side
    653,909.40x = 363,036,819,672.54
  5. Step 5: Solve for x
    x = 363,036,819,672.54/653,909.40
  6. Step 6: Final answer
    x = 555,179.08

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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.