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Finding the Fourth Proportional to 98,720.82, 136,175.99 and 59,945.31

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Solution

The fourth proportional to 98,720.82, 136,175.99 and 59,945.31 is: 82,688.86

Step by Step Solution

  1. Step 1: Write the proportion equation
    98,720.82 : 136,175.99 = 59,945.31 : x
  2. Step 2: Convert to fraction form
    98,720.82/136,175.99 = 59,945.31/x
  3. Step 3: Cross multiply
    98,720.82x = 136,175.99 × 59,945.31
  4. Step 4: Simplify right side
    98,720.82x = 8,163,111,635.38
  5. Step 5: Solve for x
    x = 8,163,111,635.38/98,720.82
  6. Step 6: Final answer
    x = 82,688.86

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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.