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Finding the Fourth Proportional to 18,630.72, 25,710.42 and 10,247.22

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Solution

The fourth proportional to 18,630.72, 25,710.42 and 10,247.22 is: 14,141.18

Step by Step Solution

  1. Step 1: Write the proportion equation
    18,630.72 : 25,710.42 = 10,247.22 : x
  2. Step 2: Convert to fraction form
    18,630.72/25,710.42 = 10,247.22/x
  3. Step 3: Cross multiply
    18,630.72x = 25,710.42 × 10,247.22
  4. Step 4: Simplify right side
    18,630.72x = 263,460,330.03
  5. Step 5: Solve for x
    x = 263,460,330.03/18,630.72
  6. Step 6: Final answer
    x = 14,141.18

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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.