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Finding the Fourth Proportional to 62,980.26, 86,912.76 and 34,685.96

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Solution

The fourth proportional to 62,980.26, 86,912.76 and 34,685.96 is: 47,866.62

Step by Step Solution

  1. Step 1: Write the proportion equation
    62,980.26 : 86,912.76 = 34,685.96 : x
  2. Step 2: Convert to fraction form
    62,980.26/86,912.76 = 34,685.96/x
  3. Step 3: Cross multiply
    62,980.26x = 86,912.76 × 34,685.96
  4. Step 4: Simplify right side
    62,980.26x = 3,014,652,082.29
  5. Step 5: Solve for x
    x = 3,014,652,082.29/62,980.26
  6. Step 6: Final answer
    x = 47,866.62

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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.