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Finding the Fourth Proportional to 147,620.21, 203,727.17 and 83,954.21

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Solution

The fourth proportional to 147,620.21, 203,727.17 and 83,954.21 is: 115,863.22

Step by Step Solution

  1. Step 1: Write the proportion equation
    147,620.21 : 203,727.17 = 83,954.21 : x
  2. Step 2: Convert to fraction form
    147,620.21/203,727.17 = 83,954.21/x
  3. Step 3: Cross multiply
    147,620.21x = 203,727.17 × 83,954.21
  4. Step 4: Simplify right side
    147,620.21x = 17,103,753,193.11
  5. Step 5: Solve for x
    x = 17,103,753,193.11/147,620.21
  6. Step 6: Final answer
    x = 115,863.22

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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.