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Finding the Fourth Proportional to 15,872.52, 21,873.87 and 11,624.88

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Solution

The fourth proportional to 15,872.52, 21,873.87 and 11,624.88 is: 16,020.21

Step by Step Solution

  1. Step 1: Write the proportion equation
    15,872.52 : 21,873.87 = 11,624.88 : x
  2. Step 2: Convert to fraction form
    15,872.52/21,873.87 = 11,624.88/x
  3. Step 3: Cross multiply
    15,872.52x = 21,873.87 × 11,624.88
  4. Step 4: Simplify right side
    15,872.52x = 254,281,113.89
  5. Step 5: Solve for x
    x = 254,281,113.89/15,872.52
  6. Step 6: Final answer
    x = 16,020.21

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1.5x scale

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.