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Finding the Fourth Proportional to 57,961.88, 79,908.86 and 49,554.32

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Solution

The fourth proportional to 57,961.88, 79,908.86 and 49,554.32 is: 68,317.82

Step by Step Solution

  1. Step 1: Write the proportion equation
    57,961.88 : 79,908.86 = 49,554.32 : x
  2. Step 2: Convert to fraction form
    57,961.88/79,908.86 = 49,554.32/x
  3. Step 3: Cross multiply
    57,961.88x = 79,908.86 × 49,554.32
  4. Step 4: Simplify right side
    57,961.88x = 3,959,829,219.28
  5. Step 5: Solve for x
    x = 3,959,829,219.28/57,961.88
  6. Step 6: Final answer
    x = 68,317.82

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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.