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Finding the Fourth Proportional to 359,421.20, 539,039.52 and 106,641.88

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Solution

The fourth proportional to 359,421.20, 539,039.52 and 106,641.88 is: 159,935.44

Step by Step Solution

  1. Step 1: Write the proportion equation
    359,421.20 : 539,039.52 = 106,641.88 : x
  2. Step 2: Convert to fraction form
    359,421.20/539,039.52 = 106,641.88/x
  3. Step 3: Cross multiply
    359,421.20x = 539,039.52 × 106,641.88
  4. Step 4: Simplify right side
    359,421.20x = 57,484,187,807.10
  5. Step 5: Solve for x
    x = 57,484,187,807.10/359,421.20
  6. Step 6: Final answer
    x = 159,935.44

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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.