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Finding the Fourth Proportional to 61,791.74, 85,274.60 and 34,196.70

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Solution

The fourth proportional to 61,791.74, 85,274.60 and 34,196.70 is: 47,192.55

Step by Step Solution

  1. Step 1: Write the proportion equation
    61,791.74 : 85,274.60 = 34,196.70 : x
  2. Step 2: Convert to fraction form
    61,791.74/85,274.60 = 34,196.70/x
  3. Step 3: Cross multiply
    61,791.74x = 85,274.60 × 34,196.70
  4. Step 4: Simplify right side
    61,791.74x = 2,916,109,913.82
  5. Step 5: Solve for x
    x = 2,916,109,913.82/61,791.74
  6. Step 6: Final answer
    x = 47,192.55

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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.