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Finding the Fourth Proportional to 61,218.31, 84,474.77 and 34,363.77

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Solution

The fourth proportional to 61,218.31, 84,474.77 and 34,363.77 is: 47,418.36

Step by Step Solution

  1. Step 1: Write the proportion equation
    61,218.31 : 84,474.77 = 34,363.77 : x
  2. Step 2: Convert to fraction form
    61,218.31/84,474.77 = 34,363.77/x
  3. Step 3: Cross multiply
    61,218.31x = 84,474.77 × 34,363.77
  4. Step 4: Simplify right side
    61,218.31x = 2,902,871,606.01
  5. Step 5: Solve for x
    x = 2,902,871,606.01/61,218.31
  6. Step 6: Final answer
    x = 47,418.36

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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.