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Finding the Fourth Proportional to 98,992.32, 136,629.25 and 58,728.44

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Solution

The fourth proportional to 98,992.32, 136,629.25 and 58,728.44 is: 81,057.02

Step by Step Solution

  1. Step 1: Write the proportion equation
    98,992.32 : 136,629.25 = 58,728.44 : x
  2. Step 2: Convert to fraction form
    98,992.32/136,629.25 = 58,728.44/x
  3. Step 3: Cross multiply
    98,992.32x = 136,629.25 × 58,728.44
  4. Step 4: Simplify right side
    98,992.32x = 8,024,022,710.87
  5. Step 5: Solve for x
    x = 8,024,022,710.87/98,992.32
  6. Step 6: Final answer
    x = 81,057.02

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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.