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Finding the Fourth Proportional to 18,924.40, 26,114.52 and 10,965.24

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Solution

The fourth proportional to 18,924.40, 26,114.52 and 10,965.24 is: 15,131.36

Step by Step Solution

  1. Step 1: Write the proportion equation
    18,924.40 : 26,114.52 = 10,965.24 : x
  2. Step 2: Convert to fraction form
    18,924.40/26,114.52 = 10,965.24/x
  3. Step 3: Cross multiply
    18,924.40x = 26,114.52 × 10,965.24
  4. Step 4: Simplify right side
    18,924.40x = 286,351,979.28
  5. Step 5: Solve for x
    x = 286,351,979.28/18,924.40
  6. Step 6: Final answer
    x = 15,131.36

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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.