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Finding the Fourth Proportional to 98,311.52, 146,749.57 and 84,361.20

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Solution

The fourth proportional to 98,311.52, 146,749.57 and 84,361.20 is: 125,925.92

Step by Step Solution

  1. Step 1: Write the proportion equation
    98,311.52 : 146,749.57 = 84,361.20 : x
  2. Step 2: Convert to fraction form
    98,311.52/146,749.57 = 84,361.20/x
  3. Step 3: Cross multiply
    98,311.52x = 146,749.57 × 84,361.20
  4. Step 4: Simplify right side
    98,311.52x = 12,379,969,063.47
  5. Step 5: Solve for x
    x = 12,379,969,063.47/98,311.52
  6. Step 6: Final answer
    x = 125,925.92

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Why These Related Problems?

These problems maintain the same ratio (1.49) or explore similar proportional relationships. Practicing with related ratios helps build understanding of proportional relationships.