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Finding the Fourth Proportional to 68,091.80, 93,965.32 and 37,876.48

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Solution

The fourth proportional to 68,091.80, 93,965.32 and 37,876.48 is: 52,268.78

Step by Step Solution

  1. Step 1: Write the proportion equation
    68,091.80 : 93,965.32 = 37,876.48 : x
  2. Step 2: Convert to fraction form
    68,091.80/93,965.32 = 37,876.48/x
  3. Step 3: Cross multiply
    68,091.80x = 93,965.32 × 37,876.48
  4. Step 4: Simplify right side
    68,091.80x = 3,559,075,563.67
  5. Step 5: Solve for x
    x = 3,559,075,563.67/68,091.80
  6. Step 6: Final answer
    x = 52,268.78

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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.