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Finding the Fourth Proportional to 84,798.81, 127,079.41 and 63,725.38

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Solution

The fourth proportional to 84,798.81, 127,079.41 and 63,725.38 is: 95,498.79

Step by Step Solution

  1. Step 1: Write the proportion equation
    84,798.81 : 127,079.41 = 63,725.38 : x
  2. Step 2: Convert to fraction form
    84,798.81/127,079.41 = 63,725.38/x
  3. Step 3: Cross multiply
    84,798.81x = 127,079.41 × 63,725.38
  4. Step 4: Simplify right side
    84,798.81x = 8,098,183,136.69
  5. Step 5: Solve for x
    x = 8,098,183,136.69/84,798.81
  6. Step 6: Final answer
    x = 95,498.79

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Why These Related Problems?

These problems maintain the same ratio (1.50) or explore similar proportional relationships. Practicing with related ratios helps build understanding of proportional relationships.