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Finding the Fourth Proportional to 125,741.68, 188,607.62 and 42,635.68

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Solution

The fourth proportional to 125,741.68, 188,607.62 and 42,635.68 is: 63,951.86

Step by Step Solution

  1. Step 1: Write the proportion equation
    125,741.68 : 188,607.62 = 42,635.68 : x
  2. Step 2: Convert to fraction form
    125,741.68/188,607.62 = 42,635.68/x
  3. Step 3: Cross multiply
    125,741.68x = 188,607.62 × 42,635.68
  4. Step 4: Simplify right side
    125,741.68x = 8,041,413,918.70
  5. Step 5: Solve for x
    x = 8,041,413,918.70/125,741.68
  6. Step 6: Final answer
    x = 63,951.86

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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.