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Finding the Fourth Proportional to 41,316.43, 61,978.74 and 13,229.43

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Solution

The fourth proportional to 41,316.43, 61,978.74 and 13,229.43 is: 19,845.46

Step by Step Solution

  1. Step 1: Write the proportion equation
    41,316.43 : 61,978.74 = 13,229.43 : x
  2. Step 2: Convert to fraction form
    41,316.43/61,978.74 = 13,229.43/x
  3. Step 3: Cross multiply
    41,316.43x = 61,978.74 × 13,229.43
  4. Step 4: Simplify right side
    41,316.43x = 819,943,402.32
  5. Step 5: Solve for x
    x = 819,943,402.32/41,316.43
  6. Step 6: Final answer
    x = 19,845.46

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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.