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Finding the Fourth Proportional to 324,078.60, 485,972.10 and 124,332.60

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Solution

The fourth proportional to 324,078.60, 485,972.10 and 124,332.60 is: 186,442.96

Step by Step Solution

  1. Step 1: Write the proportion equation
    324,078.60 : 485,972.10 = 124,332.60 : x
  2. Step 2: Convert to fraction form
    324,078.60/485,972.10 = 124,332.60/x
  3. Step 3: Cross multiply
    324,078.60x = 485,972.10 × 124,332.60
  4. Step 4: Simplify right side
    324,078.60x = 60,422,174,720.46
  5. Step 5: Solve for x
    x = 60,422,174,720.46/324,078.60
  6. Step 6: Final answer
    x = 186,442.96

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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.