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Finding the Fourth Proportional to 91,258.65, 136,794.83 and 61,679.48

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Solution

The fourth proportional to 91,258.65, 136,794.83 and 61,679.48 is: 92,456.25

Step by Step Solution

  1. Step 1: Write the proportion equation
    91,258.65 : 136,794.83 = 61,679.48 : x
  2. Step 2: Convert to fraction form
    91,258.65/136,794.83 = 61,679.48/x
  3. Step 3: Cross multiply
    91,258.65x = 136,794.83 × 61,679.48
  4. Step 4: Simplify right side
    91,258.65x = 8,437,432,988.72
  5. Step 5: Solve for x
    x = 8,437,432,988.72/91,258.65
  6. Step 6: Final answer
    x = 92,456.25

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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.