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Finding the Fourth Proportional to 16,615.80, 24,931.80 and 8,824.50

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Solution

The fourth proportional to 16,615.80, 24,931.80 and 8,824.50 is: 13,241.05

Step by Step Solution

  1. Step 1: Write the proportion equation
    16,615.80 : 24,931.80 = 8,824.50 : x
  2. Step 2: Convert to fraction form
    16,615.80/24,931.80 = 8,824.50/x
  3. Step 3: Cross multiply
    16,615.80x = 24,931.80 × 8,824.50
  4. Step 4: Simplify right side
    16,615.80x = 220,010,669.10
  5. Step 5: Solve for x
    x = 220,010,669.10/16,615.80
  6. Step 6: Final answer
    x = 13,241.05

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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.