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Finding the Fourth Proportional to 91,619.44, 137,152.48 and 82,858.48

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Solution

The fourth proportional to 91,619.44, 137,152.48 and 82,858.48 is: 124,037.50

Step by Step Solution

  1. Step 1: Write the proportion equation
    91,619.44 : 137,152.48 = 82,858.48 : x
  2. Step 2: Convert to fraction form
    91,619.44/137,152.48 = 82,858.48/x
  3. Step 3: Cross multiply
    91,619.44x = 137,152.48 × 82,858.48
  4. Step 4: Simplify right side
    91,619.44x = 11,364,246,021.03
  5. Step 5: Solve for x
    x = 11,364,246,021.03/91,619.44
  6. Step 6: Final answer
    x = 124,037.50

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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.