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Finding the Fourth Proportional to 281,952.56, 389,115.15 and 161,091.25

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Solution

The fourth proportional to 281,952.56, 389,115.15 and 161,091.25 is: 222,317.70

Step by Step Solution

  1. Step 1: Write the proportion equation
    281,952.56 : 389,115.15 = 161,091.25 : x
  2. Step 2: Convert to fraction form
    281,952.56/389,115.15 = 161,091.25/x
  3. Step 3: Cross multiply
    281,952.56x = 389,115.15 × 161,091.25
  4. Step 4: Simplify right side
    281,952.56x = 62,683,043,156.41
  5. Step 5: Solve for x
    x = 62,683,043,156.41/281,952.56
  6. Step 6: Final answer
    x = 222,317.70

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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.