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Finding the Fourth Proportional to 15,986.88, 22,063.08 and 9,274.80

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Solution

The fourth proportional to 15,986.88, 22,063.08 and 9,274.80 is: 12,799.91

Step by Step Solution

  1. Step 1: Write the proportion equation
    15,986.88 : 22,063.08 = 9,274.80 : x
  2. Step 2: Convert to fraction form
    15,986.88/22,063.08 = 9,274.80/x
  3. Step 3: Cross multiply
    15,986.88x = 22,063.08 × 9,274.80
  4. Step 4: Simplify right side
    15,986.88x = 204,630,654.38
  5. Step 5: Solve for x
    x = 204,630,654.38/15,986.88
  6. Step 6: Final answer
    x = 12,799.91

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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.