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Finding the Fourth Proportional to 18,079.71, 24,945.71 and 10,521.47

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Solution

The fourth proportional to 18,079.71, 24,945.71 and 10,521.47 is: 14,517.12

Step by Step Solution

  1. Step 1: Write the proportion equation
    18,079.71 : 24,945.71 = 10,521.47 : x
  2. Step 2: Convert to fraction form
    18,079.71/24,945.71 = 10,521.47/x
  3. Step 3: Cross multiply
    18,079.71x = 24,945.71 × 10,521.47
  4. Step 4: Simplify right side
    18,079.71x = 262,465,362.06
  5. Step 5: Solve for x
    x = 262,465,362.06/18,079.71
  6. Step 6: Final answer
    x = 14,517.12

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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.