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Finding the Fourth Proportional to 6,876.63, 9,492.21 and 4,082.13

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Solution

The fourth proportional to 6,876.63, 9,492.21 and 4,082.13 is: 5,634.79

Step by Step Solution

  1. Step 1: Write the proportion equation
    6,876.63 : 9,492.21 = 4,082.13 : x
  2. Step 2: Convert to fraction form
    6,876.63/9,492.21 = 4,082.13/x
  3. Step 3: Cross multiply
    6,876.63x = 9,492.21 × 4,082.13
  4. Step 4: Simplify right side
    6,876.63x = 38,748,367.34
  5. Step 5: Solve for x
    x = 38,748,367.34/6,876.63
  6. Step 6: Final answer
    x = 5,634.79

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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.