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Finding the Fourth Proportional to 68,060.80, 101,896.80 and 61,062.40

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Solution

The fourth proportional to 68,060.80, 101,896.80 and 61,062.40 is: 91,419.19

Step by Step Solution

  1. Step 1: Write the proportion equation
    68,060.80 : 101,896.80 = 61,062.40 : x
  2. Step 2: Convert to fraction form
    68,060.80/101,896.80 = 61,062.40/x
  3. Step 3: Cross multiply
    68,060.80x = 101,896.80 × 61,062.40
  4. Step 4: Simplify right side
    68,060.80x = 6,222,063,160.32
  5. Step 5: Solve for x
    x = 6,222,063,160.32/68,060.80
  6. Step 6: Final answer
    x = 91,419.19

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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.