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Finding the Fourth Proportional to 85,265.06, 127,858.70 and 40,912.70

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Solution

The fourth proportional to 85,265.06, 127,858.70 and 40,912.70 is: 61,350.39

Step by Step Solution

  1. Step 1: Write the proportion equation
    85,265.06 : 127,858.70 = 40,912.70 : x
  2. Step 2: Convert to fraction form
    85,265.06/127,858.70 = 40,912.70/x
  3. Step 3: Cross multiply
    85,265.06x = 127,858.70 × 40,912.70
  4. Step 4: Simplify right side
    85,265.06x = 5,231,044,635.49
  5. Step 5: Solve for x
    x = 5,231,044,635.49/85,265.06
  6. Step 6: Final answer
    x = 61,350.39

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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.