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Finding the Fourth Proportional to 44,475.64, 66,789.80 and 39,489.28

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Solution

The fourth proportional to 44,475.64, 66,789.80 and 39,489.28 is: 59,301.70

Step by Step Solution

  1. Step 1: Write the proportion equation
    44,475.64 : 66,789.80 = 39,489.28 : x
  2. Step 2: Convert to fraction form
    44,475.64/66,789.80 = 39,489.28/x
  3. Step 3: Cross multiply
    44,475.64x = 66,789.80 × 39,489.28
  4. Step 4: Simplify right side
    44,475.64x = 2,637,481,113.34
  5. Step 5: Solve for x
    x = 2,637,481,113.34/44,475.64
  6. Step 6: Final answer
    x = 59,301.70

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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.