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Finding the Fourth Proportional to 55,687.60, 83,530.20 and 37,086.80

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Solution

The fourth proportional to 55,687.60, 83,530.20 and 37,086.80 is: 55,629.40

Step by Step Solution

  1. Step 1: Write the proportion equation
    55,687.60 : 83,530.20 = 37,086.80 : x
  2. Step 2: Convert to fraction form
    55,687.60/83,530.20 = 37,086.80/x
  3. Step 3: Cross multiply
    55,687.60x = 83,530.20 × 37,086.80
  4. Step 4: Simplify right side
    55,687.60x = 3,097,867,821.36
  5. Step 5: Solve for x
    x = 3,097,867,821.36/55,687.60
  6. Step 6: Final answer
    x = 55,629.40

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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.