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Finding the Fourth Proportional to 98,552.64, 135,989.92 and 55,533.12

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Solution

The fourth proportional to 98,552.64, 135,989.92 and 55,533.12 is: 76,628.54

Step by Step Solution

  1. Step 1: Write the proportion equation
    98,552.64 : 135,989.92 = 55,533.12 : x
  2. Step 2: Convert to fraction form
    98,552.64/135,989.92 = 55,533.12/x
  3. Step 3: Cross multiply
    98,552.64x = 135,989.92 × 55,533.12
  4. Step 4: Simplify right side
    98,552.64x = 7,551,944,546.15
  5. Step 5: Solve for x
    x = 7,551,944,546.15/98,552.64
  6. Step 6: Final answer
    x = 76,628.54

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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.