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Finding the Fourth Proportional to 44,640.68, 66,959.10 and 13,475

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Solution

The fourth proportional to 44,640.68, 66,959.10 and 13,475 is: 20,211.92

Step by Step Solution

  1. Step 1: Write the proportion equation
    44,640.68 : 66,959.10 = 13,475 : x
  2. Step 2: Convert to fraction form
    44,640.68/66,959.10 = 13,475/x
  3. Step 3: Cross multiply
    44,640.68x = 66,959.10 × 13,475
  4. Step 4: Simplify right side
    44,640.68x = 902,273,872.50
  5. Step 5: Solve for x
    x = 902,273,872.50/44,640.68
  6. Step 6: Final answer
    x = 20,211.92

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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.