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Finding the Fourth Proportional to 81,806.56, 112,890.14 and 45,998.62

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Solution

The fourth proportional to 81,806.56, 112,890.14 and 45,998.62 is: 63,476.46

Step by Step Solution

  1. Step 1: Write the proportion equation
    81,806.56 : 112,890.14 = 45,998.62 : x
  2. Step 2: Convert to fraction form
    81,806.56/112,890.14 = 45,998.62/x
  3. Step 3: Cross multiply
    81,806.56x = 112,890.14 × 45,998.62
  4. Step 4: Simplify right side
    81,806.56x = 5,192,790,651.61
  5. Step 5: Solve for x
    x = 5,192,790,651.61/81,806.56
  6. Step 6: Final answer
    x = 63,476.46

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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.