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Finding the Fourth Proportional to 363,940.20, 545,910.30 and 353,572.20

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Solution

The fourth proportional to 363,940.20, 545,910.30 and 353,572.20 is: 530,358.30

Step by Step Solution

  1. Step 1: Write the proportion equation
    363,940.20 : 545,910.30 = 353,572.20 : x
  2. Step 2: Convert to fraction form
    363,940.20/545,910.30 = 353,572.20/x
  3. Step 3: Cross multiply
    363,940.20x = 545,910.30 × 353,572.20
  4. Step 4: Simplify right side
    363,940.20x = 193,018,705,773.66
  5. Step 5: Solve for x
    x = 193,018,705,773.66/363,940.20
  6. Step 6: Final answer
    x = 530,358.30

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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.