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Finding the Fourth Proportional to 91,247.68, 125,007.24 and 87,836.32

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Solution

The fourth proportional to 91,247.68, 125,007.24 and 87,836.32 is: 120,333.75

Step by Step Solution

  1. Step 1: Write the proportion equation
    91,247.68 : 125,007.24 = 87,836.32 : x
  2. Step 2: Convert to fraction form
    91,247.68/125,007.24 = 87,836.32/x
  3. Step 3: Cross multiply
    91,247.68x = 125,007.24 × 87,836.32
  4. Step 4: Simplify right side
    91,247.68x = 10,980,175,934.96
  5. Step 5: Solve for x
    x = 10,980,175,934.96/91,247.68
  6. Step 6: Final answer
    x = 120,333.75

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Why These Related Problems?

These problems maintain the same ratio (1.37) or explore similar proportional relationships. Practicing with related ratios helps build understanding of proportional relationships.