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Finding the Fourth Proportional to 91,682.94, 126,532.96 and 51,407.58

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Solution

The fourth proportional to 91,682.94, 126,532.96 and 51,407.58 is: 70,948.35

Step by Step Solution

  1. Step 1: Write the proportion equation
    91,682.94 : 126,532.96 = 51,407.58 : x
  2. Step 2: Convert to fraction form
    91,682.94/126,532.96 = 51,407.58/x
  3. Step 3: Cross multiply
    91,682.94x = 126,532.96 × 51,407.58
  4. Step 4: Simplify right side
    91,682.94x = 6,504,753,006.80
  5. Step 5: Solve for x
    x = 6,504,753,006.80/91,682.94
  6. Step 6: Final answer
    x = 70,948.35

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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.