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Finding the Fourth Proportional to 110,711.92, 152,782.80 and 62,968.60

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Solution

The fourth proportional to 110,711.92, 152,782.80 and 62,968.60 is: 86,896.87

Step by Step Solution

  1. Step 1: Write the proportion equation
    110,711.92 : 152,782.80 = 62,968.60 : x
  2. Step 2: Convert to fraction form
    110,711.92/152,782.80 = 62,968.60/x
  3. Step 3: Cross multiply
    110,711.92x = 152,782.80 × 62,968.60
  4. Step 4: Simplify right side
    110,711.92x = 9,620,519,020.08
  5. Step 5: Solve for x
    x = 9,620,519,020.08/110,711.92
  6. Step 6: Final answer
    x = 86,896.87

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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.