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Finding the Fourth Proportional to 98,771.25, 136,260.89 and 57,914.52

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Solution

The fourth proportional to 98,771.25, 136,260.89 and 57,914.52 is: 79,896.57

Step by Step Solution

  1. Step 1: Write the proportion equation
    98,771.25 : 136,260.89 = 57,914.52 : x
  2. Step 2: Convert to fraction form
    98,771.25/136,260.89 = 57,914.52/x
  3. Step 3: Cross multiply
    98,771.25x = 136,260.89 × 57,914.52
  4. Step 4: Simplify right side
    98,771.25x = 7,891,484,222.22
  5. Step 5: Solve for x
    x = 7,891,484,222.22/98,771.25
  6. Step 6: Final answer
    x = 79,896.57

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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.