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Finding the Fourth Proportional to 91,203.60, 135,574.44 and 88,512.60

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Solution

The fourth proportional to 91,203.60, 135,574.44 and 88,512.60 is: 131,574.26

Step by Step Solution

  1. Step 1: Write the proportion equation
    91,203.60 : 135,574.44 = 88,512.60 : x
  2. Step 2: Convert to fraction form
    91,203.60/135,574.44 = 88,512.60/x
  3. Step 3: Cross multiply
    91,203.60x = 135,574.44 × 88,512.60
  4. Step 4: Simplify right side
    91,203.60x = 12,000,046,177.94
  5. Step 5: Solve for x
    x = 12,000,046,177.94/91,203.60
  6. Step 6: Final answer
    x = 131,574.26

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Why These Related Problems?

These problems maintain the same ratio (1.49) or explore similar proportional relationships. Practicing with related ratios helps build understanding of proportional relationships.