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Finding the Fourth Proportional to 18,922.62, 26,117.73 and 10,969.23

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Solution

The fourth proportional to 18,922.62, 26,117.73 and 10,969.23 is: 15,140.15

Step by Step Solution

  1. Step 1: Write the proportion equation
    18,922.62 : 26,117.73 = 10,969.23 : x
  2. Step 2: Convert to fraction form
    18,922.62/26,117.73 = 10,969.23/x
  3. Step 3: Cross multiply
    18,922.62x = 26,117.73 × 10,969.23
  4. Step 4: Simplify right side
    18,922.62x = 286,491,387.45
  5. Step 5: Solve for x
    x = 286,491,387.45/18,922.62
  6. Step 6: Final answer
    x = 15,140.15

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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.