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Finding the Fourth Proportional to 115,596.56, 159,513.96 and 67,811.60

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Solution

The fourth proportional to 115,596.56, 159,513.96 and 67,811.60 is: 93,574.56

Step by Step Solution

  1. Step 1: Write the proportion equation
    115,596.56 : 159,513.96 = 67,811.60 : x
  2. Step 2: Convert to fraction form
    115,596.56/159,513.96 = 67,811.60/x
  3. Step 3: Cross multiply
    115,596.56x = 159,513.96 × 67,811.60
  4. Step 4: Simplify right side
    115,596.56x = 10,816,896,849.94
  5. Step 5: Solve for x
    x = 10,816,896,849.94/115,596.56
  6. Step 6: Final answer
    x = 93,574.56

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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.