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Finding the Fourth Proportional to 363,619.20, 545,234.40 and 153,019.20

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Solution

The fourth proportional to 363,619.20, 545,234.40 and 153,019.20 is: 229,446.99

Step by Step Solution

  1. Step 1: Write the proportion equation
    363,619.20 : 545,234.40 = 153,019.20 : x
  2. Step 2: Convert to fraction form
    363,619.20/545,234.40 = 153,019.20/x
  3. Step 3: Cross multiply
    363,619.20x = 545,234.40 × 153,019.20
  4. Step 4: Simplify right side
    363,619.20x = 83,431,331,700.48
  5. Step 5: Solve for x
    x = 83,431,331,700.48/363,619.20
  6. Step 6: Final answer
    x = 229,446.99

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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.