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Finding the Fourth Proportional to 98,231.66, 135,560.63 and 55,790.49

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Solution

The fourth proportional to 98,231.66, 135,560.63 and 55,790.49 is: 76,991.41

Step by Step Solution

  1. Step 1: Write the proportion equation
    98,231.66 : 135,560.63 = 55,790.49 : x
  2. Step 2: Convert to fraction form
    98,231.66/135,560.63 = 55,790.49/x
  3. Step 3: Cross multiply
    98,231.66x = 135,560.63 × 55,790.49
  4. Step 4: Simplify right side
    98,231.66x = 7,562,993,693.46
  5. Step 5: Solve for x
    x = 7,562,993,693.46/98,231.66
  6. Step 6: Final answer
    x = 76,991.41

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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.