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Finding the Fourth Proportional to 16,221, 24,331.50 and 5,277

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Solution

The fourth proportional to 16,221, 24,331.50 and 5,277 is: 7,915.50

Step by Step Solution

  1. Step 1: Write the proportion equation
    16,221 : 24,331.50 = 5,277 : x
  2. Step 2: Convert to fraction form
    16,221/24,331.50 = 5,277/x
  3. Step 3: Cross multiply
    16,221x = 24,331.50 × 5,277
  4. Step 4: Simplify right side
    16,221x = 128,397,325.50
  5. Step 5: Solve for x
    x = 128,397,325.50/16,221
  6. Step 6: Final answer
    x = 7,915.50

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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.