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Finding the Fourth Proportional to 8,366.38, 11,545.61 and 4,640.38

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Solution

The fourth proportional to 8,366.38, 11,545.61 and 4,640.38 is: 6,403.72

Step by Step Solution

  1. Step 1: Write the proportion equation
    8,366.38 : 11,545.61 = 4,640.38 : x
  2. Step 2: Convert to fraction form
    8,366.38/11,545.61 = 4,640.38/x
  3. Step 3: Cross multiply
    8,366.38x = 11,545.61 × 4,640.38
  4. Step 4: Simplify right side
    8,366.38x = 53,575,936.80
  5. Step 5: Solve for x
    x = 53,575,936.80/8,366.38
  6. Step 6: Final answer
    x = 6,403.72

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Half scale
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Double scale
Find fourth proportional to 8,367.38, 11,546.99 and 4,641.38
Similar ratio
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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.