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Finding the Fourth Proportional to 171,119.40, 256,679.10 and 154,206.60

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Solution

The fourth proportional to 171,119.40, 256,679.10 and 154,206.60 is: 231,309.90

Step by Step Solution

  1. Step 1: Write the proportion equation
    171,119.40 : 256,679.10 = 154,206.60 : x
  2. Step 2: Convert to fraction form
    171,119.40/256,679.10 = 154,206.60/x
  3. Step 3: Cross multiply
    171,119.40x = 256,679.10 × 154,206.60
  4. Step 4: Simplify right side
    171,119.40x = 39,581,611,302.06
  5. Step 5: Solve for x
    x = 39,581,611,302.06/171,119.40
  6. Step 6: Final answer
    x = 231,309.90

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1.5x scale

Why These Related Problems?

These problems maintain the same ratio (1.50) or explore similar proportional relationships. Practicing with related ratios helps build understanding of proportional relationships.