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Finding the Fourth Proportional to 18,161.96, 25,062.55 and 10,203.67

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Solution

The fourth proportional to 18,161.96, 25,062.55 and 10,203.67 is: 14,080.53

Step by Step Solution

  1. Step 1: Write the proportion equation
    18,161.96 : 25,062.55 = 10,203.67 : x
  2. Step 2: Convert to fraction form
    18,161.96/25,062.55 = 10,203.67/x
  3. Step 3: Cross multiply
    18,161.96x = 25,062.55 × 10,203.67
  4. Step 4: Simplify right side
    18,161.96x = 255,729,995.38
  5. Step 5: Solve for x
    x = 255,729,995.38/18,161.96
  6. Step 6: Final answer
    x = 14,080.53

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Half scale
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Double scale
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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.