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Finding the Fourth Proportional to 140,695.63, 210,979.65 and 60,695.86

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Solution

The fourth proportional to 140,695.63, 210,979.65 and 60,695.86 is: 91,016.27

Step by Step Solution

  1. Step 1: Write the proportion equation
    140,695.63 : 210,979.65 = 60,695.86 : x
  2. Step 2: Convert to fraction form
    140,695.63/210,979.65 = 60,695.86/x
  3. Step 3: Cross multiply
    140,695.63x = 210,979.65 × 60,695.86
  4. Step 4: Simplify right side
    140,695.63x = 12,805,591,299.25
  5. Step 5: Solve for x
    x = 12,805,591,299.25/140,695.63
  6. Step 6: Final answer
    x = 91,016.27

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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.