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Finding the Fourth Proportional to 65,608.80, 90,552.52 and 41,091

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Solution

The fourth proportional to 65,608.80, 90,552.52 and 41,091 is: 56,713.33

Step by Step Solution

  1. Step 1: Write the proportion equation
    65,608.80 : 90,552.52 = 41,091 : x
  2. Step 2: Convert to fraction form
    65,608.80/90,552.52 = 41,091/x
  3. Step 3: Cross multiply
    65,608.80x = 90,552.52 × 41,091
  4. Step 4: Simplify right side
    65,608.80x = 3,720,893,599.32
  5. Step 5: Solve for x
    x = 3,720,893,599.32/65,608.80
  6. Step 6: Final answer
    x = 56,713.33

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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.