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Finding the Fourth Proportional to 242,540.80, 363,811.20 and 124,442.80

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Solution

The fourth proportional to 242,540.80, 363,811.20 and 124,442.80 is: 186,664.20

Step by Step Solution

  1. Step 1: Write the proportion equation
    242,540.80 : 363,811.20 = 124,442.80 : x
  2. Step 2: Convert to fraction form
    242,540.80/363,811.20 = 124,442.80/x
  3. Step 3: Cross multiply
    242,540.80x = 363,811.20 × 124,442.80
  4. Step 4: Simplify right side
    242,540.80x = 45,273,684,399.36
  5. Step 5: Solve for x
    x = 45,273,684,399.36/242,540.80
  6. Step 6: Final answer
    x = 186,664.20

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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.