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Finding the Fourth Proportional to 86,201.34, 118,959.30 and 47,963.94

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Solution

The fourth proportional to 86,201.34, 118,959.30 and 47,963.94 is: 66,191.04

Step by Step Solution

  1. Step 1: Write the proportion equation
    86,201.34 : 118,959.30 = 47,963.94 : x
  2. Step 2: Convert to fraction form
    86,201.34/118,959.30 = 47,963.94/x
  3. Step 3: Cross multiply
    86,201.34x = 118,959.30 × 47,963.94
  4. Step 4: Simplify right side
    86,201.34x = 5,705,756,727.64
  5. Step 5: Solve for x
    x = 5,705,756,727.64/86,201.34
  6. Step 6: Final answer
    x = 66,191.04

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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.