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Finding the Fourth Proportional to 41,978.10, 62,945.55 and 15,669.30

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Solution

The fourth proportional to 41,978.10, 62,945.55 and 15,669.30 is: 23,495.89

Step by Step Solution

  1. Step 1: Write the proportion equation
    41,978.10 : 62,945.55 = 15,669.30 : x
  2. Step 2: Convert to fraction form
    41,978.10/62,945.55 = 15,669.30/x
  3. Step 3: Cross multiply
    41,978.10x = 62,945.55 × 15,669.30
  4. Step 4: Simplify right side
    41,978.10x = 986,312,706.62
  5. Step 5: Solve for x
    x = 986,312,706.62/41,978.10
  6. Step 6: Final answer
    x = 23,495.89

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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.