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Finding the Fourth Proportional to 82,281.80, 123,480.30 and 35,568.20

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Solution

The fourth proportional to 82,281.80, 123,480.30 and 35,568.20 is: 53,377.20

Step by Step Solution

  1. Step 1: Write the proportion equation
    82,281.80 : 123,480.30 = 35,568.20 : x
  2. Step 2: Convert to fraction form
    82,281.80/123,480.30 = 35,568.20/x
  3. Step 3: Cross multiply
    82,281.80x = 123,480.30 × 35,568.20
  4. Step 4: Simplify right side
    82,281.80x = 4,391,972,006.46
  5. Step 5: Solve for x
    x = 4,391,972,006.46/82,281.80
  6. Step 6: Final answer
    x = 53,377.20

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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.