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Finding the Fourth Proportional to 101,920.41, 140,645.43 and 56,601.27

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Solution

The fourth proportional to 101,920.41, 140,645.43 and 56,601.27 is: 78,107.12

Step by Step Solution

  1. Step 1: Write the proportion equation
    101,920.41 : 140,645.43 = 56,601.27 : x
  2. Step 2: Convert to fraction form
    101,920.41/140,645.43 = 56,601.27/x
  3. Step 3: Cross multiply
    101,920.41x = 140,645.43 × 56,601.27
  4. Step 4: Simplify right side
    101,920.41x = 7,960,709,957.70
  5. Step 5: Solve for x
    x = 7,960,709,957.70/101,920.41
  6. Step 6: Final answer
    x = 78,107.12

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1.5x scale

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.