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Finding the Fourth Proportional to 86,424.96, 119,245.56 and 48,699.20

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Solution

The fourth proportional to 86,424.96, 119,245.56 and 48,699.20 is: 67,193.13

Step by Step Solution

  1. Step 1: Write the proportion equation
    86,424.96 : 119,245.56 = 48,699.20 : x
  2. Step 2: Convert to fraction form
    86,424.96/119,245.56 = 48,699.20/x
  3. Step 3: Cross multiply
    86,424.96x = 119,245.56 × 48,699.20
  4. Step 4: Simplify right side
    86,424.96x = 5,807,163,375.55
  5. Step 5: Solve for x
    x = 5,807,163,375.55/86,424.96
  6. Step 6: Final answer
    x = 67,193.13

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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.