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Finding the Fourth Proportional to 125,211.99, 187,819.42 and 45,256.03

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Solution

The fourth proportional to 125,211.99, 187,819.42 and 45,256.03 is: 67,884.56

Step by Step Solution

  1. Step 1: Write the proportion equation
    125,211.99 : 187,819.42 = 45,256.03 : x
  2. Step 2: Convert to fraction form
    125,211.99/187,819.42 = 45,256.03/x
  3. Step 3: Cross multiply
    125,211.99x = 187,819.42 × 45,256.03
  4. Step 4: Simplify right side
    125,211.99x = 8,499,960,977.98
  5. Step 5: Solve for x
    x = 8,499,960,977.98/125,211.99
  6. Step 6: Final answer
    x = 67,884.56

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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.