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Finding the Fourth Proportional to 62,626.64, 86,433.66 and 38,761

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Solution

The fourth proportional to 62,626.64, 86,433.66 and 38,761 is: 53,495.69

Step by Step Solution

  1. Step 1: Write the proportion equation
    62,626.64 : 86,433.66 = 38,761 : x
  2. Step 2: Convert to fraction form
    62,626.64/86,433.66 = 38,761/x
  3. Step 3: Cross multiply
    62,626.64x = 86,433.66 × 38,761
  4. Step 4: Simplify right side
    62,626.64x = 3,350,255,095.26
  5. Step 5: Solve for x
    x = 3,350,255,095.26/62,626.64
  6. Step 6: Final answer
    x = 53,495.69

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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.