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Finding the Fourth Proportional to 294,092.40, 439,972.20 and 255,082.80

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Solution

The fourth proportional to 294,092.40, 439,972.20 and 255,082.80 is: 381,612.52

Step by Step Solution

  1. Step 1: Write the proportion equation
    294,092.40 : 439,972.20 = 255,082.80 : x
  2. Step 2: Convert to fraction form
    294,092.40/439,972.20 = 255,082.80/x
  3. Step 3: Cross multiply
    294,092.40x = 439,972.20 × 255,082.80
  4. Step 4: Simplify right side
    294,092.40x = 112,229,340,698.16
  5. Step 5: Solve for x
    x = 112,229,340,698.16/294,092.40
  6. Step 6: Final answer
    x = 381,612.52

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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.