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Finding the Fourth Proportional to 21,487.56, 32,235.82 and 6,695.88

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Solution

The fourth proportional to 21,487.56, 32,235.82 and 6,695.88 is: 10,045.22

Step by Step Solution

  1. Step 1: Write the proportion equation
    21,487.56 : 32,235.82 = 6,695.88 : x
  2. Step 2: Convert to fraction form
    21,487.56/32,235.82 = 6,695.88/x
  3. Step 3: Cross multiply
    21,487.56x = 32,235.82 × 6,695.88
  4. Step 4: Simplify right side
    21,487.56x = 215,847,182.42
  5. Step 5: Solve for x
    x = 215,847,182.42/21,487.56
  6. Step 6: Final answer
    x = 10,045.22

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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.