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Finding the Fourth Proportional to 7,245.43, 9,998.87 and 4,058.83

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Solution

The fourth proportional to 7,245.43, 9,998.87 and 4,058.83 is: 5,601.29

Step by Step Solution

  1. Step 1: Write the proportion equation
    7,245.43 : 9,998.87 = 4,058.83 : x
  2. Step 2: Convert to fraction form
    7,245.43/9,998.87 = 4,058.83/x
  3. Step 3: Cross multiply
    7,245.43x = 9,998.87 × 4,058.83
  4. Step 4: Simplify right side
    7,245.43x = 40,583,705.73
  5. Step 5: Solve for x
    x = 40,583,705.73/7,245.43
  6. Step 6: Final answer
    x = 5,601.29

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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 (1.38) or explore similar proportional relationships. Practicing with related ratios helps build understanding of proportional relationships.