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Finding the Fourth Proportional to 98,186.54, 135,493.90 and 60,009.95

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Solution

The fourth proportional to 98,186.54, 135,493.90 and 60,009.95 is: 82,811.58

Step by Step Solution

  1. Step 1: Write the proportion equation
    98,186.54 : 135,493.90 = 60,009.95 : x
  2. Step 2: Convert to fraction form
    98,186.54/135,493.90 = 60,009.95/x
  3. Step 3: Cross multiply
    98,186.54x = 135,493.90 × 60,009.95
  4. Step 4: Simplify right side
    98,186.54x = 8,130,982,353.01
  5. Step 5: Solve for x
    x = 8,130,982,353.01/98,186.54
  6. Step 6: Final answer
    x = 82,811.58

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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.