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Finding the Fourth Proportional to 18,662.70, 25,753.59 and 10,279.02

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Solution

The fourth proportional to 18,662.70, 25,753.59 and 10,279.02 is: 14,184.53

Step by Step Solution

  1. Step 1: Write the proportion equation
    18,662.70 : 25,753.59 = 10,279.02 : x
  2. Step 2: Convert to fraction form
    18,662.70/25,753.59 = 10,279.02/x
  3. Step 3: Cross multiply
    18,662.70x = 25,753.59 × 10,279.02
  4. Step 4: Simplify right side
    18,662.70x = 264,721,666.68
  5. Step 5: Solve for x
    x = 264,721,666.68/18,662.70
  6. Step 6: Final answer
    x = 14,184.53

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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.