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Finding the Fourth Proportional to 81,644.76, 112,668.78 and 45,833.84

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Solution

The fourth proportional to 81,644.76, 112,668.78 and 45,833.84 is: 63,250.14

Step by Step Solution

  1. Step 1: Write the proportion equation
    81,644.76 : 112,668.78 = 45,833.84 : x
  2. Step 2: Convert to fraction form
    81,644.76/112,668.78 = 45,833.84/x
  3. Step 3: Cross multiply
    81,644.76x = 112,668.78 × 45,833.84
  4. Step 4: Simplify right side
    81,644.76x = 5,164,042,835.52
  5. Step 5: Solve for x
    x = 5,164,042,835.52/81,644.76
  6. Step 6: Final answer
    x = 63,250.14

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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.