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Finding the Fourth Proportional to 543,358.20, 815,037.30 and 144,060.60

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Solution

The fourth proportional to 543,358.20, 815,037.30 and 144,060.60 is: 216,090.90

Step by Step Solution

  1. Step 1: Write the proportion equation
    543,358.20 : 815,037.30 = 144,060.60 : x
  2. Step 2: Convert to fraction form
    543,358.20/815,037.30 = 144,060.60/x
  3. Step 3: Cross multiply
    543,358.20x = 815,037.30 × 144,060.60
  4. Step 4: Simplify right side
    543,358.20x = 117,414,762,460.38
  5. Step 5: Solve for x
    x = 117,414,762,460.38/543,358.20
  6. Step 6: Final answer
    x = 216,090.90

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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.