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Finding the Fourth Proportional to 82,418.80, 123,574.20 and 32,468.80

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Solution

The fourth proportional to 82,418.80, 123,574.20 and 32,468.80 is: 48,681.93

Step by Step Solution

  1. Step 1: Write the proportion equation
    82,418.80 : 123,574.20 = 32,468.80 : x
  2. Step 2: Convert to fraction form
    82,418.80/123,574.20 = 32,468.80/x
  3. Step 3: Cross multiply
    82,418.80x = 123,574.20 × 32,468.80
  4. Step 4: Simplify right side
    82,418.80x = 4,012,305,984.96
  5. Step 5: Solve for x
    x = 4,012,305,984.96/82,418.80
  6. Step 6: Final answer
    x = 48,681.93

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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.