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Finding the Fourth Proportional to 98,015.16, 146,939.70 and 38,892.60

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Solution

The fourth proportional to 98,015.16, 146,939.70 and 38,892.60 is: 58,305.95

Step by Step Solution

  1. Step 1: Write the proportion equation
    98,015.16 : 146,939.70 = 38,892.60 : x
  2. Step 2: Convert to fraction form
    98,015.16/146,939.70 = 38,892.60/x
  3. Step 3: Cross multiply
    98,015.16x = 146,939.70 × 38,892.60
  4. Step 4: Simplify right side
    98,015.16x = 5,714,866,976.22
  5. Step 5: Solve for x
    x = 5,714,866,976.22/98,015.16
  6. Step 6: Final answer
    x = 58,305.95

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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.