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Finding the Fourth Proportional to 8,103.05, 12,154.57 and 1,947.05

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Solution

The fourth proportional to 8,103.05, 12,154.57 and 1,947.05 is: 2,920.57

Step by Step Solution

  1. Step 1: Write the proportion equation
    8,103.05 : 12,154.57 = 1,947.05 : x
  2. Step 2: Convert to fraction form
    8,103.05/12,154.57 = 1,947.05/x
  3. Step 3: Cross multiply
    8,103.05x = 12,154.57 × 1,947.05
  4. Step 4: Simplify right side
    8,103.05x = 23,665,542.76
  5. Step 5: Solve for x
    x = 23,665,542.76/8,103.05
  6. Step 6: Final answer
    x = 2,920.57

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Half scale
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Double scale
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Similar ratio
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1.5x scale

Why These Related Problems?

These problems maintain the same ratio (1.50) or explore similar proportional relationships. Practicing with related ratios helps build understanding of proportional relationships.