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Finding the Fourth Proportional to 98,093.20, 146,988.60 and 73,015.60

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Solution

The fourth proportional to 98,093.20, 146,988.60 and 73,015.60 is: 109,410.85

Step by Step Solution

  1. Step 1: Write the proportion equation
    98,093.20 : 146,988.60 = 73,015.60 : x
  2. Step 2: Convert to fraction form
    98,093.20/146,988.60 = 73,015.60/x
  3. Step 3: Cross multiply
    98,093.20x = 146,988.60 × 73,015.60
  4. Step 4: Simplify right side
    98,093.20x = 10,732,460,822.16
  5. Step 5: Solve for x
    x = 10,732,460,822.16/98,093.20
  6. Step 6: Final answer
    x = 109,410.85

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Why These Related Problems?

These problems maintain the same ratio (1.50) or explore similar proportional relationships. Practicing with related ratios helps build understanding of proportional relationships.