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Finding the Fourth Proportional to 125,028.65, 187,575.19 and 45,063.42

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Solution

The fourth proportional to 125,028.65, 187,575.19 and 45,063.42 is: 67,606.74

Step by Step Solution

  1. Step 1: Write the proportion equation
    125,028.65 : 187,575.19 = 45,063.42 : x
  2. Step 2: Convert to fraction form
    125,028.65/187,575.19 = 45,063.42/x
  3. Step 3: Cross multiply
    125,028.65x = 187,575.19 × 45,063.42
  4. Step 4: Simplify right side
    125,028.65x = 8,452,779,568.55
  5. Step 5: Solve for x
    x = 8,452,779,568.55/125,028.65
  6. Step 6: Final answer
    x = 67,606.74

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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.