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Finding the Fourth Proportional to 11,185.46, 15,413.19 and 8,652.19

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Solution

The fourth proportional to 11,185.46, 15,413.19 and 8,652.19 is: 11,922.42

Step by Step Solution

  1. Step 1: Write the proportion equation
    11,185.46 : 15,413.19 = 8,652.19 : x
  2. Step 2: Convert to fraction form
    11,185.46/15,413.19 = 8,652.19/x
  3. Step 3: Cross multiply
    11,185.46x = 15,413.19 × 8,652.19
  4. Step 4: Simplify right side
    11,185.46x = 133,357,771.32
  5. Step 5: Solve for x
    x = 133,357,771.32/11,185.46
  6. Step 6: Final answer
    x = 11,922.42

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Half scale
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Double scale
Find fourth proportional to 11,186.46, 15,414.57 and 8,653.19
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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.