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Finding the Fourth Proportional to 91,863.92, 137,848.43 and 35,696.70

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Solution

The fourth proportional to 91,863.92, 137,848.43 and 35,696.70 is: 53,565.47

Step by Step Solution

  1. Step 1: Write the proportion equation
    91,863.92 : 137,848.43 = 35,696.70 : x
  2. Step 2: Convert to fraction form
    91,863.92/137,848.43 = 35,696.70/x
  3. Step 3: Cross multiply
    91,863.92x = 137,848.43 × 35,696.70
  4. Step 4: Simplify right side
    91,863.92x = 4,920,734,140.42
  5. Step 5: Solve for x
    x = 4,920,734,140.42/91,863.92
  6. Step 6: Final answer
    x = 53,565.47

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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.