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Finding the Fourth Proportional to 71,393.20, 107,089.80 and 41,844.40

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Solution

The fourth proportional to 71,393.20, 107,089.80 and 41,844.40 is: 62,766.60

Step by Step Solution

  1. Step 1: Write the proportion equation
    71,393.20 : 107,089.80 = 41,844.40 : x
  2. Step 2: Convert to fraction form
    71,393.20/107,089.80 = 41,844.40/x
  3. Step 3: Cross multiply
    71,393.20x = 107,089.80 × 41,844.40
  4. Step 4: Simplify right side
    71,393.20x = 4,481,108,427.12
  5. Step 5: Solve for x
    x = 4,481,108,427.12/71,393.20
  6. Step 6: Final answer
    x = 62,766.60

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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.