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Finding the Fourth Proportional to 363,913.20, 545,869.80 and 186,766.20

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Solution

The fourth proportional to 363,913.20, 545,869.80 and 186,766.20 is: 280,149.30

Step by Step Solution

  1. Step 1: Write the proportion equation
    363,913.20 : 545,869.80 = 186,766.20 : x
  2. Step 2: Convert to fraction form
    363,913.20/545,869.80 = 186,766.20/x
  3. Step 3: Cross multiply
    363,913.20x = 545,869.80 × 186,766.20
  4. Step 4: Simplify right side
    363,913.20x = 101,950,028,240.76
  5. Step 5: Solve for x
    x = 101,950,028,240.76/363,913.20
  6. Step 6: Final answer
    x = 280,149.30

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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.