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Finding the Fourth Proportional to 56,640.30, 84,960.45 and 33,020.70

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Solution

The fourth proportional to 56,640.30, 84,960.45 and 33,020.70 is: 49,531.05

Step by Step Solution

  1. Step 1: Write the proportion equation
    56,640.30 : 84,960.45 = 33,020.70 : x
  2. Step 2: Convert to fraction form
    56,640.30/84,960.45 = 33,020.70/x
  3. Step 3: Cross multiply
    56,640.30x = 84,960.45 × 33,020.70
  4. Step 4: Simplify right side
    56,640.30x = 2,805,453,531.32
  5. Step 5: Solve for x
    x = 2,805,453,531.32/56,640.30
  6. Step 6: Final answer
    x = 49,531.05

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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.