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Finding the Fourth Proportional to 125,358.46, 187,860.90 and 69,223.84

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Solution

The fourth proportional to 125,358.46, 187,860.90 and 69,223.84 is: 103,738.13

Step by Step Solution

  1. Step 1: Write the proportion equation
    125,358.46 : 187,860.90 = 69,223.84 : x
  2. Step 2: Convert to fraction form
    125,358.46/187,860.90 = 69,223.84/x
  3. Step 3: Cross multiply
    125,358.46x = 187,860.90 × 69,223.84
  4. Step 4: Simplify right side
    125,358.46x = 13,004,451,944.55
  5. Step 5: Solve for x
    x = 13,004,451,944.55/125,358.46
  6. Step 6: Final answer
    x = 103,738.13

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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.