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Finding the Fourth Proportional to 18,031.96, 24,915.90 and 13,876.12

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Solution

The fourth proportional to 18,031.96, 24,915.90 and 13,876.12 is: 19,173.51

Step by Step Solution

  1. Step 1: Write the proportion equation
    18,031.96 : 24,915.90 = 13,876.12 : x
  2. Step 2: Convert to fraction form
    18,031.96/24,915.90 = 13,876.12/x
  3. Step 3: Cross multiply
    18,031.96x = 24,915.90 × 13,876.12
  4. Step 4: Simplify right side
    18,031.96x = 345,736,018.31
  5. Step 5: Solve for x
    x = 345,736,018.31/18,031.96
  6. Step 6: Final answer
    x = 19,173.51

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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.