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Finding the Fourth Proportional to 91,902.60, 137,853.90 and 52,463.70

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Solution

The fourth proportional to 91,902.60, 137,853.90 and 52,463.70 is: 78,695.55

Step by Step Solution

  1. Step 1: Write the proportion equation
    91,902.60 : 137,853.90 = 52,463.70 : x
  2. Step 2: Convert to fraction form
    91,902.60/137,853.90 = 52,463.70/x
  3. Step 3: Cross multiply
    91,902.60x = 137,853.90 × 52,463.70
  4. Step 4: Simplify right side
    91,902.60x = 7,232,325,653.43
  5. Step 5: Solve for x
    x = 7,232,325,653.43/91,902.60
  6. Step 6: Final answer
    x = 78,695.55

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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.