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Finding the Fourth Proportional to 91,257.86, 136,886.79 and 59,694.46

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Solution

The fourth proportional to 91,257.86, 136,886.79 and 59,694.46 is: 89,541.69

Step by Step Solution

  1. Step 1: Write the proportion equation
    91,257.86 : 136,886.79 = 59,694.46 : x
  2. Step 2: Convert to fraction form
    91,257.86/136,886.79 = 59,694.46/x
  3. Step 3: Cross multiply
    91,257.86x = 136,886.79 × 59,694.46
  4. Step 4: Simplify right side
    91,257.86x = 8,171,383,010.18
  5. Step 5: Solve for x
    x = 8,171,383,010.18/91,257.86
  6. Step 6: Final answer
    x = 89,541.69

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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.