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Finding the Fourth Proportional to 294,517.80, 441,776.70 and 144,781.20

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Solution

The fourth proportional to 294,517.80, 441,776.70 and 144,781.20 is: 217,171.80

Step by Step Solution

  1. Step 1: Write the proportion equation
    294,517.80 : 441,776.70 = 144,781.20 : x
  2. Step 2: Convert to fraction form
    294,517.80/441,776.70 = 144,781.20/x
  3. Step 3: Cross multiply
    294,517.80x = 441,776.70 × 144,781.20
  4. Step 4: Simplify right side
    294,517.80x = 63,960,960,758.04
  5. Step 5: Solve for x
    x = 63,960,960,758.04/294,517.80
  6. Step 6: Final answer
    x = 217,171.80

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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.