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Finding the Fourth Proportional to 359,688.60, 539,481.87 and 122,996.88

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Solution

The fourth proportional to 359,688.60, 539,481.87 and 122,996.88 is: 184,477.87

Step by Step Solution

  1. Step 1: Write the proportion equation
    359,688.60 : 539,481.87 = 122,996.88 : x
  2. Step 2: Convert to fraction form
    359,688.60/539,481.87 = 122,996.88/x
  3. Step 3: Cross multiply
    359,688.60x = 539,481.87 × 122,996.88
  4. Step 4: Simplify right side
    359,688.60x = 66,354,586,826.57
  5. Step 5: Solve for x
    x = 66,354,586,826.57/359,688.60
  6. Step 6: Final answer
    x = 184,477.87

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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.