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Finding the Fourth Proportional to 90,642.44, 125,090.09 and 62,022.10

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Solution

The fourth proportional to 90,642.44, 125,090.09 and 62,022.10 is: 85,592.91

Step by Step Solution

  1. Step 1: Write the proportion equation
    90,642.44 : 125,090.09 = 62,022.10 : x
  2. Step 2: Convert to fraction form
    90,642.44/125,090.09 = 62,022.10/x
  3. Step 3: Cross multiply
    90,642.44x = 125,090.09 × 62,022.10
  4. Step 4: Simplify right side
    90,642.44x = 7,758,350,070.99
  5. Step 5: Solve for x
    x = 7,758,350,070.99/90,642.44
  6. Step 6: Final answer
    x = 85,592.91

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Why These Related Problems?

These problems maintain the same ratio (1.38) or explore similar proportional relationships. Practicing with related ratios helps build understanding of proportional relationships.