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Finding the Fourth Proportional to 21,806.64, 32,663.52 and 16,482.87

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Solution

The fourth proportional to 21,806.64, 32,663.52 and 16,482.87 is: 24,689.20

Step by Step Solution

  1. Step 1: Write the proportion equation
    21,806.64 : 32,663.52 = 16,482.87 : x
  2. Step 2: Convert to fraction form
    21,806.64/32,663.52 = 16,482.87/x
  3. Step 3: Cross multiply
    21,806.64x = 32,663.52 × 16,482.87
  4. Step 4: Simplify right side
    21,806.64x = 538,388,553.90
  5. Step 5: Solve for x
    x = 538,388,553.90/21,806.64
  6. Step 6: Final answer
    x = 24,689.20

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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.