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Finding the Fourth Proportional to 187,300.80, 280,951.20 and 124,315.20

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Solution

The fourth proportional to 187,300.80, 280,951.20 and 124,315.20 is: 186,472.80

Step by Step Solution

  1. Step 1: Write the proportion equation
    187,300.80 : 280,951.20 = 124,315.20 : x
  2. Step 2: Convert to fraction form
    187,300.80/280,951.20 = 124,315.20/x
  3. Step 3: Cross multiply
    187,300.80x = 280,951.20 × 124,315.20
  4. Step 4: Simplify right side
    187,300.80x = 34,926,504,618.24
  5. Step 5: Solve for x
    x = 34,926,504,618.24/187,300.80
  6. Step 6: Final answer
    x = 186,472.80

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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.