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Finding the Fourth Proportional to 71,615.86, 98,875.44 and 48,992.56

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Solution

The fourth proportional to 71,615.86, 98,875.44 and 48,992.56 is: 67,640.90

Step by Step Solution

  1. Step 1: Write the proportion equation
    71,615.86 : 98,875.44 = 48,992.56 : x
  2. Step 2: Convert to fraction form
    71,615.86/98,875.44 = 48,992.56/x
  3. Step 3: Cross multiply
    71,615.86x = 98,875.44 × 48,992.56
  4. Step 4: Simplify right side
    71,615.86x = 4,844,160,926.73
  5. Step 5: Solve for x
    x = 4,844,160,926.73/71,615.86
  6. Step 6: Final answer
    x = 67,640.90

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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.