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Finding the Fourth Proportional to 61,891.08, 85,411.44 and 36,399.30

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Solution

The fourth proportional to 61,891.08, 85,411.44 and 36,399.30 is: 50,232.06

Step by Step Solution

  1. Step 1: Write the proportion equation
    61,891.08 : 85,411.44 = 36,399.30 : x
  2. Step 2: Convert to fraction form
    61,891.08/85,411.44 = 36,399.30/x
  3. Step 3: Cross multiply
    61,891.08x = 85,411.44 × 36,399.30
  4. Step 4: Simplify right side
    61,891.08x = 3,108,916,627.99
  5. Step 5: Solve for x
    x = 3,108,916,627.99/61,891.08
  6. Step 6: Final answer
    x = 50,232.06

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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.