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Finding the Fourth Proportional to 86,069.52, 118,769.76 and 48,342.96

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Solution

The fourth proportional to 86,069.52, 118,769.76 and 48,342.96 is: 66,709.82

Step by Step Solution

  1. Step 1: Write the proportion equation
    86,069.52 : 118,769.76 = 48,342.96 : x
  2. Step 2: Convert to fraction form
    86,069.52/118,769.76 = 48,342.96/x
  3. Step 3: Cross multiply
    86,069.52x = 118,769.76 × 48,342.96
  4. Step 4: Simplify right side
    86,069.52x = 5,741,681,756.89
  5. Step 5: Solve for x
    x = 5,741,681,756.89/86,069.52
  6. Step 6: Final answer
    x = 66,709.82

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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.