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Finding the Fourth Proportional to 89,221.53, 133,867.34 and 39,266.60

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Solution

The fourth proportional to 89,221.53, 133,867.34 and 39,266.60 is: 58,915.31

Step by Step Solution

  1. Step 1: Write the proportion equation
    89,221.53 : 133,867.34 = 39,266.60 : x
  2. Step 2: Convert to fraction form
    89,221.53/133,867.34 = 39,266.60/x
  3. Step 3: Cross multiply
    89,221.53x = 133,867.34 × 39,266.60
  4. Step 4: Simplify right side
    89,221.53x = 5,256,514,427.17
  5. Step 5: Solve for x
    x = 5,256,514,427.17/89,221.53
  6. Step 6: Final answer
    x = 58,915.31

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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.