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Finding the Fourth Proportional to 125,581.60, 188,350.80 and 46,655.20

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Solution

The fourth proportional to 125,581.60, 188,350.80 and 46,655.20 is: 69,974.78

Step by Step Solution

  1. Step 1: Write the proportion equation
    125,581.60 : 188,350.80 = 46,655.20 : x
  2. Step 2: Convert to fraction form
    125,581.60/188,350.80 = 46,655.20/x
  3. Step 3: Cross multiply
    125,581.60x = 188,350.80 × 46,655.20
  4. Step 4: Simplify right side
    125,581.60x = 8,787,544,244.16
  5. Step 5: Solve for x
    x = 8,787,544,244.16/125,581.60
  6. Step 6: Final answer
    x = 69,974.78

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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.