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Finding the Fourth Proportional to 324,542.70, 486,583.65 and 124,785.90

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Solution

The fourth proportional to 324,542.70, 486,583.65 and 124,785.90 is: 187,090.26

Step by Step Solution

  1. Step 1: Write the proportion equation
    324,542.70 : 486,583.65 = 124,785.90 : x
  2. Step 2: Convert to fraction form
    324,542.70/486,583.65 = 124,785.90/x
  3. Step 3: Cross multiply
    324,542.70x = 486,583.65 × 124,785.90
  4. Step 4: Simplify right side
    324,542.70x = 60,718,778,690.54
  5. Step 5: Solve for x
    x = 60,718,778,690.54/324,542.70
  6. Step 6: Final answer
    x = 187,090.26

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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.