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Finding the Fourth Proportional to 130,195.72, 179,661.59 and 72,825.10

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Solution

The fourth proportional to 130,195.72, 179,661.59 and 72,825.10 is: 100,493.88

Step by Step Solution

  1. Step 1: Write the proportion equation
    130,195.72 : 179,661.59 = 72,825.10 : x
  2. Step 2: Convert to fraction form
    130,195.72/179,661.59 = 72,825.10/x
  3. Step 3: Cross multiply
    130,195.72x = 179,661.59 × 72,825.10
  4. Step 4: Simplify right side
    130,195.72x = 13,083,873,257.91
  5. Step 5: Solve for x
    x = 13,083,873,257.91/130,195.72
  6. Step 6: Final answer
    x = 100,493.88

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These problems maintain the same ratio (1.38) or explore similar proportional relationships. Practicing with related ratios helps build understanding of proportional relationships.