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Finding the Fourth Proportional to 98,561.81, 136,015.30 and 53,849.81

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Solution

The fourth proportional to 98,561.81, 136,015.30 and 53,849.81 is: 74,312.74

Step by Step Solution

  1. Step 1: Write the proportion equation
    98,561.81 : 136,015.30 = 53,849.81 : x
  2. Step 2: Convert to fraction form
    98,561.81/136,015.30 = 53,849.81/x
  3. Step 3: Cross multiply
    98,561.81x = 136,015.30 × 53,849.81
  4. Step 4: Simplify right side
    98,561.81x = 7,324,398,469.44
  5. Step 5: Solve for x
    x = 7,324,398,469.44/98,561.81
  6. Step 6: Final answer
    x = 74,312.74

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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.