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Finding the Fourth Proportional to 92,961.71, 139,442.61 and 61,364.39

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Solution

The fourth proportional to 92,961.71, 139,442.61 and 61,364.39 is: 92,046.61

Step by Step Solution

  1. Step 1: Write the proportion equation
    92,961.71 : 139,442.61 = 61,364.39 : x
  2. Step 2: Convert to fraction form
    92,961.71/139,442.61 = 61,364.39/x
  3. Step 3: Cross multiply
    92,961.71x = 139,442.61 × 61,364.39
  4. Step 4: Simplify right side
    92,961.71x = 8,556,810,005.44
  5. Step 5: Solve for x
    x = 8,556,810,005.44/92,961.71
  6. Step 6: Final answer
    x = 92,046.61

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Why These Related Problems?

These problems maintain the same ratio (1.50) or explore similar proportional relationships. Practicing with related ratios helps build understanding of proportional relationships.