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Finding the Fourth Proportional to 61,857.11, 85,363.81 and 33,562.80

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Solution

The fourth proportional to 61,857.11, 85,363.81 and 33,562.80 is: 46,317.20

Step by Step Solution

  1. Step 1: Write the proportion equation
    61,857.11 : 85,363.81 = 33,562.80 : x
  2. Step 2: Convert to fraction form
    61,857.11/85,363.81 = 33,562.80/x
  3. Step 3: Cross multiply
    61,857.11x = 85,363.81 × 33,562.80
  4. Step 4: Simplify right side
    61,857.11x = 2,865,048,398.36
  5. Step 5: Solve for x
    x = 2,865,048,398.36/61,857.11
  6. Step 6: Final answer
    x = 46,317.20

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Why These Related Problems?

These problems maintain the same ratio (1.38) or explore similar proportional relationships. Practicing with related ratios helps build understanding of proportional relationships.