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Finding the Fourth Proportional to 123,956.40, 185,934.60 and 71,468.40

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Solution

The fourth proportional to 123,956.40, 185,934.60 and 71,468.40 is: 107,202.60

Step by Step Solution

  1. Step 1: Write the proportion equation
    123,956.40 : 185,934.60 = 71,468.40 : x
  2. Step 2: Convert to fraction form
    123,956.40/185,934.60 = 71,468.40/x
  3. Step 3: Cross multiply
    123,956.40x = 185,934.60 × 71,468.40
  4. Step 4: Simplify right side
    123,956.40x = 13,288,448,366.64
  5. Step 5: Solve for x
    x = 13,288,448,366.64/123,956.40
  6. Step 6: Final answer
    x = 107,202.60

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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.