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Finding the Fourth Proportional to 18,922.23, 26,112.66 and 10,969.07

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Solution

The fourth proportional to 18,922.23, 26,112.66 and 10,969.07 is: 15,137.31

Step by Step Solution

  1. Step 1: Write the proportion equation
    18,922.23 : 26,112.66 = 10,969.07 : x
  2. Step 2: Convert to fraction form
    18,922.23/26,112.66 = 10,969.07/x
  3. Step 3: Cross multiply
    18,922.23x = 26,112.66 × 10,969.07
  4. Step 4: Simplify right side
    18,922.23x = 286,431,595.43
  5. Step 5: Solve for x
    x = 286,431,595.43/18,922.23
  6. Step 6: Final answer
    x = 15,137.31

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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.