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Finding the Fourth Proportional to 64,422.28, 96,642.53 and 20,053.52

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Solution

The fourth proportional to 64,422.28, 96,642.53 and 20,053.52 is: 30,083.11

Step by Step Solution

  1. Step 1: Write the proportion equation
    64,422.28 : 96,642.53 = 20,053.52 : x
  2. Step 2: Convert to fraction form
    64,422.28/96,642.53 = 20,053.52/x
  3. Step 3: Cross multiply
    64,422.28x = 96,642.53 × 20,053.52
  4. Step 4: Simplify right side
    64,422.28x = 1,938,022,475.13
  5. Step 5: Solve for x
    x = 1,938,022,475.13/64,422.28
  6. Step 6: Final answer
    x = 30,083.11

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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.