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Finding the Fourth Proportional to 84,041.86, 115,976.20 and 45,801.70

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Solution

The fourth proportional to 84,041.86, 115,976.20 and 45,801.70 is: 63,205.49

Step by Step Solution

  1. Step 1: Write the proportion equation
    84,041.86 : 115,976.20 = 45,801.70 : x
  2. Step 2: Convert to fraction form
    84,041.86/115,976.20 = 45,801.70/x
  3. Step 3: Cross multiply
    84,041.86x = 115,976.20 × 45,801.70
  4. Step 4: Simplify right side
    84,041.86x = 5,311,907,119.54
  5. Step 5: Solve for x
    x = 5,311,907,119.54/84,041.86
  6. Step 6: Final answer
    x = 63,205.49

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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.