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Finding the Fourth Proportional to 18,889.70, 26,066.18 and 10,932.42

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Solution

The fourth proportional to 18,889.70, 26,066.18 and 10,932.42 is: 15,085.81

Step by Step Solution

  1. Step 1: Write the proportion equation
    18,889.70 : 26,066.18 = 10,932.42 : x
  2. Step 2: Convert to fraction form
    18,889.70/26,066.18 = 10,932.42/x
  3. Step 3: Cross multiply
    18,889.70x = 26,066.18 × 10,932.42
  4. Step 4: Simplify right side
    18,889.70x = 284,966,454.89
  5. Step 5: Solve for x
    x = 284,966,454.89/18,889.70
  6. Step 6: Final answer
    x = 15,085.81

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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.