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Finding the Fourth Proportional to 8,728.36, 12,045.18 and 5,193.16

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Solution

The fourth proportional to 8,728.36, 12,045.18 and 5,193.16 is: 7,166.59

Step by Step Solution

  1. Step 1: Write the proportion equation
    8,728.36 : 12,045.18 = 5,193.16 : x
  2. Step 2: Convert to fraction form
    8,728.36/12,045.18 = 5,193.16/x
  3. Step 3: Cross multiply
    8,728.36x = 12,045.18 × 5,193.16
  4. Step 4: Simplify right side
    8,728.36x = 62,552,546.97
  5. Step 5: Solve for x
    x = 62,552,546.97/8,728.36
  6. Step 6: Final answer
    x = 7,166.59

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Half scale
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Double scale
Find fourth proportional to 8,729.36, 12,046.56 and 5,194.16
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.