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Finding the Fourth Proportional to 70,231.86, 96,922.98 and 38,398.86

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Solution

The fourth proportional to 70,231.86, 96,922.98 and 38,398.86 is: 52,992.07

Step by Step Solution

  1. Step 1: Write the proportion equation
    70,231.86 : 96,922.98 = 38,398.86 : x
  2. Step 2: Convert to fraction form
    70,231.86/96,922.98 = 38,398.86/x
  3. Step 3: Cross multiply
    70,231.86x = 96,922.98 × 38,398.86
  4. Step 4: Simplify right side
    70,231.86x = 3,721,731,939.80
  5. Step 5: Solve for x
    x = 3,721,731,939.80/70,231.86
  6. Step 6: Final answer
    x = 52,992.07

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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.