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Finding the Fourth Proportional to 543,296.70, 814,945.05 and 143,999.10

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Solution

The fourth proportional to 543,296.70, 814,945.05 and 143,999.10 is: 215,998.65

Step by Step Solution

  1. Step 1: Write the proportion equation
    543,296.70 : 814,945.05 = 143,999.10 : x
  2. Step 2: Convert to fraction form
    543,296.70/814,945.05 = 143,999.10/x
  3. Step 3: Cross multiply
    543,296.70x = 814,945.05 × 143,999.10
  4. Step 4: Simplify right side
    543,296.70x = 117,351,353,749.46
  5. Step 5: Solve for x
    x = 117,351,353,749.46/543,296.70
  6. Step 6: Final answer
    x = 215,998.65

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Double scale
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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.