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Finding the Fourth Proportional to 543,512.20, 815,268.30 and 169,534.60

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Solution

The fourth proportional to 543,512.20, 815,268.30 and 169,534.60 is: 254,301.90

Step by Step Solution

  1. Step 1: Write the proportion equation
    543,512.20 : 815,268.30 = 169,534.60 : x
  2. Step 2: Convert to fraction form
    543,512.20/815,268.30 = 169,534.60/x
  3. Step 3: Cross multiply
    543,512.20x = 815,268.30 × 169,534.60
  4. Step 4: Simplify right side
    543,512.20x = 138,216,185,133.18
  5. Step 5: Solve for x
    x = 138,216,185,133.18/543,512.20
  6. Step 6: Final answer
    x = 254,301.90

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Similar ratio
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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.