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Finding the Fourth Proportional to 98,245.17, 135,571.05 and 55,795.50

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Solution

The fourth proportional to 98,245.17, 135,571.05 and 55,795.50 is: 76,993.65

Step by Step Solution

  1. Step 1: Write the proportion equation
    98,245.17 : 135,571.05 = 55,795.50 : x
  2. Step 2: Convert to fraction form
    98,245.17/135,571.05 = 55,795.50/x
  3. Step 3: Cross multiply
    98,245.17x = 135,571.05 × 55,795.50
  4. Step 4: Simplify right side
    98,245.17x = 7,564,254,520.28
  5. Step 5: Solve for x
    x = 7,564,254,520.28/98,245.17
  6. Step 6: Final answer
    x = 76,993.65

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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.