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Finding the Fourth Proportional to 242,597.80, 363,767.10 and 84,831.40

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Solution

The fourth proportional to 242,597.80, 363,767.10 and 84,831.40 is: 127,201.78

Step by Step Solution

  1. Step 1: Write the proportion equation
    242,597.80 : 363,767.10 = 84,831.40 : x
  2. Step 2: Convert to fraction form
    242,597.80/363,767.10 = 84,831.40/x
  3. Step 3: Cross multiply
    242,597.80x = 363,767.10 × 84,831.40
  4. Step 4: Simplify right side
    242,597.80x = 30,858,872,366.94
  5. Step 5: Solve for x
    x = 30,858,872,366.94/242,597.80
  6. Step 6: Final answer
    x = 127,201.78

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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.