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Finding the Fourth Proportional to 86,754.73, 119,720.70 and 48,513.83

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Solution

The fourth proportional to 86,754.73, 119,720.70 and 48,513.83 is: 66,948.63

Step by Step Solution

  1. Step 1: Write the proportion equation
    86,754.73 : 119,720.70 = 48,513.83 : x
  2. Step 2: Convert to fraction form
    86,754.73/119,720.70 = 48,513.83/x
  3. Step 3: Cross multiply
    86,754.73x = 119,720.70 × 48,513.83
  4. Step 4: Simplify right side
    86,754.73x = 5,808,110,310.09
  5. Step 5: Solve for x
    x = 5,808,110,310.09/86,754.73
  6. Step 6: Final answer
    x = 66,948.63

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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.