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Finding the Fourth Proportional to 9,057.88, 12,492.78 and 6,072.76

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Solution

The fourth proportional to 9,057.88, 12,492.78 and 6,072.76 is: 8,375.65

Step by Step Solution

  1. Step 1: Write the proportion equation
    9,057.88 : 12,492.78 = 6,072.76 : x
  2. Step 2: Convert to fraction form
    9,057.88/12,492.78 = 6,072.76/x
  3. Step 3: Cross multiply
    9,057.88x = 12,492.78 × 6,072.76
  4. Step 4: Simplify right side
    9,057.88x = 75,865,654.67
  5. Step 5: Solve for x
    x = 75,865,654.67/9,057.88
  6. Step 6: Final answer
    x = 8,375.65

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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.