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Finding the Fourth Proportional to 18,925.44, 26,121.52 and 10,972.08

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Solution

The fourth proportional to 18,925.44, 26,121.52 and 10,972.08 is: 15,144.03

Step by Step Solution

  1. Step 1: Write the proportion equation
    18,925.44 : 26,121.52 = 10,972.08 : x
  2. Step 2: Convert to fraction form
    18,925.44/26,121.52 = 10,972.08/x
  3. Step 3: Cross multiply
    18,925.44x = 26,121.52 × 10,972.08
  4. Step 4: Simplify right side
    18,925.44x = 286,607,407.16
  5. Step 5: Solve for x
    x = 286,607,407.16/18,925.44
  6. Step 6: Final answer
    x = 15,144.03

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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.