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Finding the Fourth Proportional to 18,306.62, 25,263.14 and 9,923.12

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Solution

The fourth proportional to 18,306.62, 25,263.14 and 9,923.12 is: 13,693.90

Step by Step Solution

  1. Step 1: Write the proportion equation
    18,306.62 : 25,263.14 = 9,923.12 : x
  2. Step 2: Convert to fraction form
    18,306.62/25,263.14 = 9,923.12/x
  3. Step 3: Cross multiply
    18,306.62x = 25,263.14 × 9,923.12
  4. Step 4: Simplify right side
    18,306.62x = 250,688,993.87
  5. Step 5: Solve for x
    x = 250,688,993.87/18,306.62
  6. Step 6: Final answer
    x = 13,693.90

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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.