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Finding the Fourth Proportional to 358,439.20, 537,853.20 and 148,098.40

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Solution

The fourth proportional to 358,439.20, 537,853.20 and 148,098.40 is: 222,227.92

Step by Step Solution

  1. Step 1: Write the proportion equation
    358,439.20 : 537,853.20 = 148,098.40 : x
  2. Step 2: Convert to fraction form
    358,439.20/537,853.20 = 148,098.40/x
  3. Step 3: Cross multiply
    358,439.20x = 537,853.20 × 148,098.40
  4. Step 4: Simplify right side
    358,439.20x = 79,655,198,354.88
  5. Step 5: Solve for x
    x = 79,655,198,354.88/358,439.20
  6. Step 6: Final answer
    x = 222,227.92

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1.5x scale

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.