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Finding the Fourth Proportional to 83,682.53, 115,481.51 and 45,441.77

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Solution

The fourth proportional to 83,682.53, 115,481.51 and 45,441.77 is: 62,709.43

Step by Step Solution

  1. Step 1: Write the proportion equation
    83,682.53 : 115,481.51 = 45,441.77 : x
  2. Step 2: Convert to fraction form
    83,682.53/115,481.51 = 45,441.77/x
  3. Step 3: Cross multiply
    83,682.53x = 115,481.51 × 45,441.77
  4. Step 4: Simplify right side
    83,682.53x = 5,247,683,412.06
  5. Step 5: Solve for x
    x = 5,247,683,412.06/83,682.53
  6. Step 6: Final answer
    x = 62,709.43

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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.