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Finding the Fourth Proportional to 70,912.70, 97,916.58 and 48,299.12

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Solution

The fourth proportional to 70,912.70, 97,916.58 and 48,299.12 is: 66,691.65

Step by Step Solution

  1. Step 1: Write the proportion equation
    70,912.70 : 97,916.58 = 48,299.12 : x
  2. Step 2: Convert to fraction form
    70,912.70/97,916.58 = 48,299.12/x
  3. Step 3: Cross multiply
    70,912.70x = 97,916.58 × 48,299.12
  4. Step 4: Simplify right side
    70,912.70x = 4,729,284,647.41
  5. Step 5: Solve for x
    x = 4,729,284,647.41/70,912.70
  6. Step 6: Final answer
    x = 66,691.65

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Why These Related Problems?

These problems maintain the same ratio (1.38) or explore similar proportional relationships. Practicing with related ratios helps build understanding of proportional relationships.