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Finding the Fourth Proportional to 71,607.48, 98,821.14 and 48,993.90

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Solution

The fourth proportional to 71,607.48, 98,821.14 and 48,993.90 is: 67,613.51

Step by Step Solution

  1. Step 1: Write the proportion equation
    71,607.48 : 98,821.14 = 48,993.90 : x
  2. Step 2: Convert to fraction form
    71,607.48/98,821.14 = 48,993.90/x
  3. Step 3: Cross multiply
    71,607.48x = 98,821.14 × 48,993.90
  4. Step 4: Simplify right side
    71,607.48x = 4,841,633,051.05
  5. Step 5: Solve for x
    x = 4,841,633,051.05/71,607.48
  6. Step 6: Final answer
    x = 67,613.51

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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.