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Finding the Fourth Proportional to 14,974.74, 20,664.06 and 8,260.38

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Solution

The fourth proportional to 14,974.74, 20,664.06 and 8,260.38 is: 11,398.73

Step by Step Solution

  1. Step 1: Write the proportion equation
    14,974.74 : 20,664.06 = 8,260.38 : x
  2. Step 2: Convert to fraction form
    14,974.74/20,664.06 = 8,260.38/x
  3. Step 3: Cross multiply
    14,974.74x = 20,664.06 × 8,260.38
  4. Step 4: Simplify right side
    14,974.74x = 170,692,987.94
  5. Step 5: Solve for x
    x = 170,692,987.94/14,974.74
  6. Step 6: Final answer
    x = 11,398.73

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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.