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Finding the Fourth Proportional to 21,372.66, 32,058.99 and 5,789.88

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Solution

The fourth proportional to 21,372.66, 32,058.99 and 5,789.88 is: 8,684.82

Step by Step Solution

  1. Step 1: Write the proportion equation
    21,372.66 : 32,058.99 = 5,789.88 : x
  2. Step 2: Convert to fraction form
    21,372.66/32,058.99 = 5,789.88/x
  3. Step 3: Cross multiply
    21,372.66x = 32,058.99 × 5,789.88
  4. Step 4: Simplify right side
    21,372.66x = 185,617,705.02
  5. Step 5: Solve for x
    x = 185,617,705.02/21,372.66
  6. Step 6: Final answer
    x = 8,684.82

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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.