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Finding the Fourth Proportional to 71,610.40, 107,415.60 and 55,002.40

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Solution

The fourth proportional to 71,610.40, 107,415.60 and 55,002.40 is: 82,503.60

Step by Step Solution

  1. Step 1: Write the proportion equation
    71,610.40 : 107,415.60 = 55,002.40 : x
  2. Step 2: Convert to fraction form
    71,610.40/107,415.60 = 55,002.40/x
  3. Step 3: Cross multiply
    71,610.40x = 107,415.60 × 55,002.40
  4. Step 4: Simplify right side
    71,610.40x = 5,908,115,797.44
  5. Step 5: Solve for x
    x = 5,908,115,797.44/71,610.40
  6. Step 6: Final answer
    x = 82,503.60

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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.