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Finding the Fourth Proportional to 17,958.16, 26,948.76 and 8,719.12

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Solution

The fourth proportional to 17,958.16, 26,948.76 and 8,719.12 is: 13,084.27

Step by Step Solution

  1. Step 1: Write the proportion equation
    17,958.16 : 26,948.76 = 8,719.12 : x
  2. Step 2: Convert to fraction form
    17,958.16/26,948.76 = 8,719.12/x
  3. Step 3: Cross multiply
    17,958.16x = 26,948.76 × 8,719.12
  4. Step 4: Simplify right side
    17,958.16x = 234,969,472.29
  5. Step 5: Solve for x
    x = 234,969,472.29/17,958.16
  6. Step 6: Final answer
    x = 13,084.27

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1.5x scale

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.