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Finding the Fourth Proportional to 86,805.79, 119,796.65 and 48,563.06

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Solution

The fourth proportional to 86,805.79, 119,796.65 and 48,563.06 is: 67,019.62

Step by Step Solution

  1. Step 1: Write the proportion equation
    86,805.79 : 119,796.65 = 48,563.06 : x
  2. Step 2: Convert to fraction form
    86,805.79/119,796.65 = 48,563.06/x
  3. Step 3: Cross multiply
    86,805.79x = 119,796.65 × 48,563.06
  4. Step 4: Simplify right side
    86,805.79x = 5,817,691,273.94
  5. Step 5: Solve for x
    x = 5,817,691,273.94/86,805.79
  6. Step 6: Final answer
    x = 67,019.62

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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.