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Finding the Fourth Proportional to 97,690.60, 146,211.90 and 70,960.60

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Solution

The fourth proportional to 97,690.60, 146,211.90 and 70,960.60 is: 106,205.55

Step by Step Solution

  1. Step 1: Write the proportion equation
    97,690.60 : 146,211.90 = 70,960.60 : x
  2. Step 2: Convert to fraction form
    97,690.60/146,211.90 = 70,960.60/x
  3. Step 3: Cross multiply
    97,690.60x = 146,211.90 × 70,960.60
  4. Step 4: Simplify right side
    97,690.60x = 10,375,284,151.14
  5. Step 5: Solve for x
    x = 10,375,284,151.14/97,690.60
  6. Step 6: Final answer
    x = 106,205.55

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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.