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Finding the Fourth Proportional to 125,212.59, 187,735.82 and 40,943.22

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Solution

The fourth proportional to 125,212.59, 187,735.82 and 40,943.22 is: 61,387.67

Step by Step Solution

  1. Step 1: Write the proportion equation
    125,212.59 : 187,735.82 = 40,943.22 : x
  2. Step 2: Convert to fraction form
    125,212.59/187,735.82 = 40,943.22/x
  3. Step 3: Cross multiply
    125,212.59x = 187,735.82 × 40,943.22
  4. Step 4: Simplify right side
    125,212.59x = 7,686,508,775.42
  5. Step 5: Solve for x
    x = 7,686,508,775.42/125,212.59
  6. Step 6: Final answer
    x = 61,387.67

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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.