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Finding the Fourth Proportional to 61,287.18, 84,579.03 and 36,137.22

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Solution

The fourth proportional to 61,287.18, 84,579.03 and 36,137.22 is: 49,870.97

Step by Step Solution

  1. Step 1: Write the proportion equation
    61,287.18 : 84,579.03 = 36,137.22 : x
  2. Step 2: Convert to fraction form
    61,287.18/84,579.03 = 36,137.22/x
  3. Step 3: Cross multiply
    61,287.18x = 84,579.03 × 36,137.22
  4. Step 4: Simplify right side
    61,287.18x = 3,056,451,014.50
  5. Step 5: Solve for x
    x = 3,056,451,014.50/61,287.18
  6. Step 6: Final answer
    x = 49,870.97

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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.