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Finding the Fourth Proportional to 187,340.80, 281,011.20 and 124,355.20

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Solution

The fourth proportional to 187,340.80, 281,011.20 and 124,355.20 is: 186,532.80

Step by Step Solution

  1. Step 1: Write the proportion equation
    187,340.80 : 281,011.20 = 124,355.20 : x
  2. Step 2: Convert to fraction form
    187,340.80/281,011.20 = 124,355.20/x
  3. Step 3: Cross multiply
    187,340.80x = 281,011.20 × 124,355.20
  4. Step 4: Simplify right side
    187,340.80x = 34,945,203,978.24
  5. Step 5: Solve for x
    x = 34,945,203,978.24/187,340.80
  6. Step 6: Final answer
    x = 186,532.80

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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.