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Finding the Fourth Proportional to 91,376.96, 136,788.96 and 84,464.96

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Solution

The fourth proportional to 91,376.96, 136,788.96 and 84,464.96 is: 126,441.87

Step by Step Solution

  1. Step 1: Write the proportion equation
    91,376.96 : 136,788.96 = 84,464.96 : x
  2. Step 2: Convert to fraction form
    91,376.96/136,788.96 = 84,464.96/x
  3. Step 3: Cross multiply
    91,376.96x = 136,788.96 × 84,464.96
  4. Step 4: Simplify right side
    91,376.96x = 11,553,874,034.84
  5. Step 5: Solve for x
    x = 11,553,874,034.84/91,376.96
  6. Step 6: Final answer
    x = 126,441.87

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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.