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Finding the Fourth Proportional to 64,432.56, 96,613.08 and 22,290

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Solution

The fourth proportional to 64,432.56, 96,613.08 and 22,290 is: 33,422.63

Step by Step Solution

  1. Step 1: Write the proportion equation
    64,432.56 : 96,613.08 = 22,290 : x
  2. Step 2: Convert to fraction form
    64,432.56/96,613.08 = 22,290/x
  3. Step 3: Cross multiply
    64,432.56x = 96,613.08 × 22,290
  4. Step 4: Simplify right side
    64,432.56x = 2,153,505,553.20
  5. Step 5: Solve for x
    x = 2,153,505,553.20/64,432.56
  6. Step 6: Final answer
    x = 33,422.63

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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.