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Finding the Fourth Proportional to 98,480.52, 135,917.46 and 56,049.48

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Solution

The fourth proportional to 98,480.52, 135,917.46 and 56,049.48 is: 77,356.45

Step by Step Solution

  1. Step 1: Write the proportion equation
    98,480.52 : 135,917.46 = 56,049.48 : x
  2. Step 2: Convert to fraction form
    98,480.52/135,917.46 = 56,049.48/x
  3. Step 3: Cross multiply
    98,480.52x = 135,917.46 × 56,049.48
  4. Step 4: Simplify right side
    98,480.52x = 7,618,102,955.92
  5. Step 5: Solve for x
    x = 7,618,102,955.92/98,480.52
  6. Step 6: Final answer
    x = 77,356.45

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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.