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Finding the Fourth Proportional to 18,892.74, 26,071.56 and 10,934.81

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Solution

The fourth proportional to 18,892.74, 26,071.56 and 10,934.81 is: 15,089.79

Step by Step Solution

  1. Step 1: Write the proportion equation
    18,892.74 : 26,071.56 = 10,934.81 : x
  2. Step 2: Convert to fraction form
    18,892.74/26,071.56 = 10,934.81/x
  3. Step 3: Cross multiply
    18,892.74x = 26,071.56 × 10,934.81
  4. Step 4: Simplify right side
    18,892.74x = 285,087,424.65
  5. Step 5: Solve for x
    x = 285,087,424.65/18,892.74
  6. Step 6: Final answer
    x = 15,089.79

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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.