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Finding the Fourth Proportional to 62,396.91, 86,170.64 and 39,746.07

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Solution

The fourth proportional to 62,396.91, 86,170.64 and 39,746.07 is: 54,889.64

Step by Step Solution

  1. Step 1: Write the proportion equation
    62,396.91 : 86,170.64 = 39,746.07 : x
  2. Step 2: Convert to fraction form
    62,396.91/86,170.64 = 39,746.07/x
  3. Step 3: Cross multiply
    62,396.91x = 86,170.64 × 39,746.07
  4. Step 4: Simplify right side
    62,396.91x = 3,424,944,090.65
  5. Step 5: Solve for x
    x = 3,424,944,090.65/62,396.91
  6. Step 6: Final answer
    x = 54,889.64

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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.