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Finding the Fourth Proportional to 359,331.20, 538,921.20 and 181,671.20

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Solution

The fourth proportional to 359,331.20, 538,921.20 and 181,671.20 is: 272,468.58

Step by Step Solution

  1. Step 1: Write the proportion equation
    359,331.20 : 538,921.20 = 181,671.20 : x
  2. Step 2: Convert to fraction form
    359,331.20/538,921.20 = 181,671.20/x
  3. Step 3: Cross multiply
    359,331.20x = 538,921.20 × 181,671.20
  4. Step 4: Simplify right side
    359,331.20x = 97,906,461,109.44
  5. Step 5: Solve for x
    x = 97,906,461,109.44/359,331.20
  6. Step 6: Final answer
    x = 272,468.58

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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.