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Finding the Fourth Proportional to 66,475.19, 99,691.21 and 22,090.03

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Solution

The fourth proportional to 66,475.19, 99,691.21 and 22,090.03 is: 33,127.88

Step by Step Solution

  1. Step 1: Write the proportion equation
    66,475.19 : 99,691.21 = 22,090.03 : x
  2. Step 2: Convert to fraction form
    66,475.19/99,691.21 = 22,090.03/x
  3. Step 3: Cross multiply
    66,475.19x = 99,691.21 × 22,090.03
  4. Step 4: Simplify right side
    66,475.19x = 2,202,181,819.64
  5. Step 5: Solve for x
    x = 2,202,181,819.64/66,475.19
  6. Step 6: Final answer
    x = 33,127.88

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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.