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Finding the Fourth Proportional to 56,745.40, 85,089.60 and 33,060.76

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Solution

The fourth proportional to 56,745.40, 85,089.60 and 33,060.76 is: 49,574.54

Step by Step Solution

  1. Step 1: Write the proportion equation
    56,745.40 : 85,089.60 = 33,060.76 : x
  2. Step 2: Convert to fraction form
    56,745.40/85,089.60 = 33,060.76/x
  3. Step 3: Cross multiply
    56,745.40x = 85,089.60 × 33,060.76
  4. Step 4: Simplify right side
    56,745.40x = 2,813,126,844.10
  5. Step 5: Solve for x
    x = 2,813,126,844.10/56,745.40
  6. Step 6: Final answer
    x = 49,574.54

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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.