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Finding the Fourth Proportional to 71,122.92, 98,075.97 and 61,084.56

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Solution

The fourth proportional to 71,122.92, 98,075.97 and 61,084.56 is: 84,233.43

Step by Step Solution

  1. Step 1: Write the proportion equation
    71,122.92 : 98,075.97 = 61,084.56 : x
  2. Step 2: Convert to fraction form
    71,122.92/98,075.97 = 61,084.56/x
  3. Step 3: Cross multiply
    71,122.92x = 98,075.97 × 61,084.56
  4. Step 4: Simplify right side
    71,122.92x = 5,990,927,474.02
  5. Step 5: Solve for x
    x = 5,990,927,474.02/71,122.92
  6. Step 6: Final answer
    x = 84,233.43

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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.