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Finding the Fourth Proportional to 3,998.46, 5,515.02 and 3,466.39

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Solution

The fourth proportional to 3,998.46, 5,515.02 and 3,466.39 is: 4,781.14

Step by Step Solution

  1. Step 1: Write the proportion equation
    3,998.46 : 5,515.02 = 3,466.39 : x
  2. Step 2: Convert to fraction form
    3,998.46/5,515.02 = 3,466.39/x
  3. Step 3: Cross multiply
    3,998.46x = 5,515.02 × 3,466.39
  4. Step 4: Simplify right side
    3,998.46x = 19,117,219.63
  5. Step 5: Solve for x
    x = 19,117,219.63/3,998.46
  6. Step 6: Final answer
    x = 4,781.14

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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.