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Finding the Fourth Proportional to 140,671.92, 210,554.82 and 92,680.16

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Solution

The fourth proportional to 140,671.92, 210,554.82 and 92,680.16 is: 138,721.74

Step by Step Solution

  1. Step 1: Write the proportion equation
    140,671.92 : 210,554.82 = 92,680.16 : x
  2. Step 2: Convert to fraction form
    140,671.92/210,554.82 = 92,680.16/x
  3. Step 3: Cross multiply
    140,671.92x = 210,554.82 × 92,680.16
  4. Step 4: Simplify right side
    140,671.92x = 19,514,253,353.60
  5. Step 5: Solve for x
    x = 19,514,253,353.60/140,671.92
  6. Step 6: Final answer
    x = 138,721.74

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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.