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Finding the Fourth Proportional to 18,123.92, 25,012.68 and 10,572.68

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Solution

The fourth proportional to 18,123.92, 25,012.68 and 10,572.68 is: 14,591.27

Step by Step Solution

  1. Step 1: Write the proportion equation
    18,123.92 : 25,012.68 = 10,572.68 : x
  2. Step 2: Convert to fraction form
    18,123.92/25,012.68 = 10,572.68/x
  3. Step 3: Cross multiply
    18,123.92x = 25,012.68 × 10,572.68
  4. Step 4: Simplify right side
    18,123.92x = 264,451,061.58
  5. Step 5: Solve for x
    x = 264,451,061.58/18,123.92
  6. Step 6: Final answer
    x = 14,591.27

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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.