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Finding the Fourth Proportional to 62,420.88, 86,141.12 and 34,126.57

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Solution

The fourth proportional to 62,420.88, 86,141.12 and 34,126.57 is: 47,094.83

Step by Step Solution

  1. Step 1: Write the proportion equation
    62,420.88 : 86,141.12 = 34,126.57 : x
  2. Step 2: Convert to fraction form
    62,420.88/86,141.12 = 34,126.57/x
  3. Step 3: Cross multiply
    62,420.88x = 86,141.12 × 34,126.57
  4. Step 4: Simplify right side
    62,420.88x = 2,939,700,961.56
  5. Step 5: Solve for x
    x = 2,939,700,961.56/62,420.88
  6. Step 6: Final answer
    x = 47,094.83

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Why These Related Problems?

These problems maintain the same ratio (1.38) or explore similar proportional relationships. Practicing with related ratios helps build understanding of proportional relationships.