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Finding the Fourth Proportional to 18,572.50, 25,630.19 and 10,189

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Solution

The fourth proportional to 18,572.50, 25,630.19 and 10,189 is: 14,060.90

Step by Step Solution

  1. Step 1: Write the proportion equation
    18,572.50 : 25,630.19 = 10,189 : x
  2. Step 2: Convert to fraction form
    18,572.50/25,630.19 = 10,189/x
  3. Step 3: Cross multiply
    18,572.50x = 25,630.19 × 10,189
  4. Step 4: Simplify right side
    18,572.50x = 261,146,005.91
  5. Step 5: Solve for x
    x = 261,146,005.91/18,572.50
  6. Step 6: Final answer
    x = 14,060.90

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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.