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Finding the Fourth Proportional to 55,979.60, 83,969.40 and 33,861.20

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Solution

The fourth proportional to 55,979.60, 83,969.40 and 33,861.20 is: 50,791.80

Step by Step Solution

  1. Step 1: Write the proportion equation
    55,979.60 : 83,969.40 = 33,861.20 : x
  2. Step 2: Convert to fraction form
    55,979.60/83,969.40 = 33,861.20/x
  3. Step 3: Cross multiply
    55,979.60x = 83,969.40 × 33,861.20
  4. Step 4: Simplify right side
    55,979.60x = 2,843,304,647.28
  5. Step 5: Solve for x
    x = 2,843,304,647.28/55,979.60
  6. Step 6: Final answer
    x = 50,791.80

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1.5x scale

Why These Related Problems?

These problems maintain the same ratio (1.50) or explore similar proportional relationships. Practicing with related ratios helps build understanding of proportional relationships.