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Finding the Fourth Proportional to 16,655.68, 24,978 and 5,559.28

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Solution

The fourth proportional to 16,655.68, 24,978 and 5,559.28 is: 8,337.08

Step by Step Solution

  1. Step 1: Write the proportion equation
    16,655.68 : 24,978 = 5,559.28 : x
  2. Step 2: Convert to fraction form
    16,655.68/24,978 = 5,559.28/x
  3. Step 3: Cross multiply
    16,655.68x = 24,978 × 5,559.28
  4. Step 4: Simplify right side
    16,655.68x = 138,859,695.84
  5. Step 5: Solve for x
    x = 138,859,695.84/16,655.68
  6. Step 6: Final answer
    x = 8,337.08

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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.