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Finding the Fourth Proportional to 44,312.80, 66,469.20 and 29,279.20

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Solution

The fourth proportional to 44,312.80, 66,469.20 and 29,279.20 is: 43,918.80

Step by Step Solution

  1. Step 1: Write the proportion equation
    44,312.80 : 66,469.20 = 29,279.20 : x
  2. Step 2: Convert to fraction form
    44,312.80/66,469.20 = 29,279.20/x
  3. Step 3: Cross multiply
    44,312.80x = 66,469.20 × 29,279.20
  4. Step 4: Simplify right side
    44,312.80x = 1,946,165,000.64
  5. Step 5: Solve for x
    x = 1,946,165,000.64/44,312.80
  6. Step 6: Final answer
    x = 43,918.80

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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.