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Finding the Fourth Proportional to 85,089.66, 127,440.09 and 40,747.56

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Solution

The fourth proportional to 85,089.66, 127,440.09 and 40,747.56 is: 61,028.25

Step by Step Solution

  1. Step 1: Write the proportion equation
    85,089.66 : 127,440.09 = 40,747.56 : x
  2. Step 2: Convert to fraction form
    85,089.66/127,440.09 = 40,747.56/x
  3. Step 3: Cross multiply
    85,089.66x = 127,440.09 × 40,747.56
  4. Step 4: Simplify right side
    85,089.66x = 5,192,872,713.68
  5. Step 5: Solve for x
    x = 5,192,872,713.68/85,089.66
  6. Step 6: Final answer
    x = 61,028.25

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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.