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Finding the Fourth Proportional to 125,449.98, 188,125.90 and 45,468.96

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Solution

The fourth proportional to 125,449.98, 188,125.90 and 45,468.96 is: 68,185.65

Step by Step Solution

  1. Step 1: Write the proportion equation
    125,449.98 : 188,125.90 = 45,468.96 : x
  2. Step 2: Convert to fraction form
    125,449.98/188,125.90 = 45,468.96/x
  3. Step 3: Cross multiply
    125,449.98x = 188,125.90 × 45,468.96
  4. Step 4: Simplify right side
    125,449.98x = 8,553,888,908.39
  5. Step 5: Solve for x
    x = 8,553,888,908.39/125,449.98
  6. Step 6: Final answer
    x = 68,185.65

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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.