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Finding the Fourth Proportional to 62,940.85, 86,858.33 and 34,646.54

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Solution

The fourth proportional to 62,940.85, 86,858.33 and 34,646.54 is: 47,812.19

Step by Step Solution

  1. Step 1: Write the proportion equation
    62,940.85 : 86,858.33 = 34,646.54 : x
  2. Step 2: Convert to fraction form
    62,940.85/86,858.33 = 34,646.54/x
  3. Step 3: Cross multiply
    62,940.85x = 86,858.33 × 34,646.54
  4. Step 4: Simplify right side
    62,940.85x = 3,009,339,997.15
  5. Step 5: Solve for x
    x = 3,009,339,997.15/62,940.85
  6. Step 6: Final answer
    x = 47,812.19

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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.