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Finding the Fourth Proportional to 84,043.80, 125,965.80 and 44,580.60

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Solution

The fourth proportional to 84,043.80, 125,965.80 and 44,580.60 is: 66,817.91

Step by Step Solution

  1. Step 1: Write the proportion equation
    84,043.80 : 125,965.80 = 44,580.60 : x
  2. Step 2: Convert to fraction form
    84,043.80/125,965.80 = 44,580.60/x
  3. Step 3: Cross multiply
    84,043.80x = 125,965.80 × 44,580.60
  4. Step 4: Simplify right side
    84,043.80x = 5,615,630,943.48
  5. Step 5: Solve for x
    x = 5,615,630,943.48/84,043.80
  6. Step 6: Final answer
    x = 66,817.91

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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.