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Finding the Fourth Proportional to 242,806.20, 364,209.30 and 148,327.80

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Solution

The fourth proportional to 242,806.20, 364,209.30 and 148,327.80 is: 222,491.70

Step by Step Solution

  1. Step 1: Write the proportion equation
    242,806.20 : 364,209.30 = 148,327.80 : x
  2. Step 2: Convert to fraction form
    242,806.20/364,209.30 = 148,327.80/x
  3. Step 3: Cross multiply
    242,806.20x = 364,209.30 × 148,327.80
  4. Step 4: Simplify right side
    242,806.20x = 54,022,364,208.54
  5. Step 5: Solve for x
    x = 54,022,364,208.54/242,806.20
  6. Step 6: Final answer
    x = 222,491.70

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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.