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Finding the Fourth Proportional to 61,091.35, 84,306.05 and 37,218

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Solution

The fourth proportional to 61,091.35, 84,306.05 and 37,218 is: 51,360.84

Step by Step Solution

  1. Step 1: Write the proportion equation
    61,091.35 : 84,306.05 = 37,218 : x
  2. Step 2: Convert to fraction form
    61,091.35/84,306.05 = 37,218/x
  3. Step 3: Cross multiply
    61,091.35x = 84,306.05 × 37,218
  4. Step 4: Simplify right side
    61,091.35x = 3,137,702,661.95
  5. Step 5: Solve for x
    x = 3,137,702,661.95/61,091.35
  6. Step 6: Final answer
    x = 51,360.84

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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.