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Finding the Fourth Proportional to 14,872.76, 20,526.13 and 8,904.43

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Solution

The fourth proportional to 14,872.76, 20,526.13 and 8,904.43 is: 12,289.14

Step by Step Solution

  1. Step 1: Write the proportion equation
    14,872.76 : 20,526.13 = 8,904.43 : x
  2. Step 2: Convert to fraction form
    14,872.76/20,526.13 = 8,904.43/x
  3. Step 3: Cross multiply
    14,872.76x = 20,526.13 × 8,904.43
  4. Step 4: Simplify right side
    14,872.76x = 182,773,487.76
  5. Step 5: Solve for x
    x = 182,773,487.76/14,872.76
  6. Step 6: Final answer
    x = 12,289.14

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Why These Related Problems?

These problems maintain the same ratio (1.38) or explore similar proportional relationships. Practicing with related ratios helps build understanding of proportional relationships.