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Finding the Fourth Proportional to 18,572.75, 25,630.47 and 10,074.96

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Solution

The fourth proportional to 18,572.75, 25,630.47 and 10,074.96 is: 13,903.49

Step by Step Solution

  1. Step 1: Write the proportion equation
    18,572.75 : 25,630.47 = 10,074.96 : x
  2. Step 2: Convert to fraction form
    18,572.75/25,630.47 = 10,074.96/x
  3. Step 3: Cross multiply
    18,572.75x = 25,630.47 × 10,074.96
  4. Step 4: Simplify right side
    18,572.75x = 258,225,960.03
  5. Step 5: Solve for x
    x = 258,225,960.03/18,572.75
  6. Step 6: Final answer
    x = 13,903.49

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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.