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Finding the Fourth Proportional to 61,343.87, 84,648.06 and 34,115.54

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Solution

The fourth proportional to 61,343.87, 84,648.06 and 34,115.54 is: 47,075.84

Step by Step Solution

  1. Step 1: Write the proportion equation
    61,343.87 : 84,648.06 = 34,115.54 : x
  2. Step 2: Convert to fraction form
    61,343.87/84,648.06 = 34,115.54/x
  3. Step 3: Cross multiply
    61,343.87x = 84,648.06 × 34,115.54
  4. Step 4: Simplify right side
    61,343.87x = 2,887,813,853.61
  5. Step 5: Solve for x
    x = 2,887,813,853.61/61,343.87
  6. Step 6: Final answer
    x = 47,075.84

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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.