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Finding the Fourth Proportional to 62,938.79, 86,855.49 and 34,644.48

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Solution

The fourth proportional to 62,938.79, 86,855.49 and 34,644.48 is: 47,809.36

Step by Step Solution

  1. Step 1: Write the proportion equation
    62,938.79 : 86,855.49 = 34,644.48 : x
  2. Step 2: Convert to fraction form
    62,938.79/86,855.49 = 34,644.48/x
  3. Step 3: Cross multiply
    62,938.79x = 86,855.49 × 34,644.48
  4. Step 4: Simplify right side
    62,938.79x = 3,009,063,286.20
  5. Step 5: Solve for x
    x = 3,009,063,286.20/62,938.79
  6. Step 6: Final answer
    x = 47,809.36

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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.