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Finding the Fourth Proportional to 61,643.43, 85,068.63 and 34,786.26

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Solution

The fourth proportional to 61,643.43, 85,068.63 and 34,786.26 is: 48,005.43

Step by Step Solution

  1. Step 1: Write the proportion equation
    61,643.43 : 85,068.63 = 34,786.26 : x
  2. Step 2: Convert to fraction form
    61,643.43/85,068.63 = 34,786.26/x
  3. Step 3: Cross multiply
    61,643.43x = 85,068.63 × 34,786.26
  4. Step 4: Simplify right side
    61,643.43x = 2,959,219,481.02
  5. Step 5: Solve for x
    x = 2,959,219,481.02/61,643.43
  6. Step 6: Final answer
    x = 48,005.43

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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.