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Finding the Fourth Proportional to 125,674.62, 188,452.70 and 45,656.15

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Solution

The fourth proportional to 125,674.62, 188,452.70 and 45,656.15 is: 68,462.71

Step by Step Solution

  1. Step 1: Write the proportion equation
    125,674.62 : 188,452.70 = 45,656.15 : x
  2. Step 2: Convert to fraction form
    125,674.62/188,452.70 = 45,656.15/x
  3. Step 3: Cross multiply
    125,674.62x = 188,452.70 × 45,656.15
  4. Step 4: Simplify right side
    125,674.62x = 8,604,025,096.10
  5. Step 5: Solve for x
    x = 8,604,025,096.10/125,674.62
  6. Step 6: Final answer
    x = 68,462.71

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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.