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Finding the Fourth Proportional to 363,139.20, 544,708.80 and 347,781.60

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Solution

The fourth proportional to 363,139.20, 544,708.80 and 347,781.60 is: 521,672.40

Step by Step Solution

  1. Step 1: Write the proportion equation
    363,139.20 : 544,708.80 = 347,781.60 : x
  2. Step 2: Convert to fraction form
    363,139.20/544,708.80 = 347,781.60/x
  3. Step 3: Cross multiply
    363,139.20x = 544,708.80 × 347,781.60
  4. Step 4: Simplify right side
    363,139.20x = 189,439,697,998.08
  5. Step 5: Solve for x
    x = 189,439,697,998.08/363,139.20
  6. Step 6: Final answer
    x = 521,672.40

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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.