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Finding the Fourth Proportional to 125,493.66, 188,268.57 and 42,385.50

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Solution

The fourth proportional to 125,493.66, 188,268.57 and 42,385.50 is: 63,587.73

Step by Step Solution

  1. Step 1: Write the proportion equation
    125,493.66 : 188,268.57 = 42,385.50 : x
  2. Step 2: Convert to fraction form
    125,493.66/188,268.57 = 42,385.50/x
  3. Step 3: Cross multiply
    125,493.66x = 188,268.57 × 42,385.50
  4. Step 4: Simplify right side
    125,493.66x = 7,979,857,473.74
  5. Step 5: Solve for x
    x = 7,979,857,473.74/125,493.66
  6. Step 6: Final answer
    x = 63,587.73

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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.