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Finding the Fourth Proportional to 98,562.81, 136,016.68 and 53,850.81

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Solution

The fourth proportional to 98,562.81, 136,016.68 and 53,850.81 is: 74,314.12

Step by Step Solution

  1. Step 1: Write the proportion equation
    98,562.81 : 136,016.68 = 53,850.81 : x
  2. Step 2: Convert to fraction form
    98,562.81/136,016.68 = 53,850.81/x
  3. Step 3: Cross multiply
    98,562.81x = 136,016.68 × 53,850.81
  4. Step 4: Simplify right side
    98,562.81x = 7,324,608,391.51
  5. Step 5: Solve for x
    x = 7,324,608,391.51/98,562.81
  6. Step 6: Final answer
    x = 74,314.12

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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.