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Finding the Fourth Proportional to 519,663.28, 779,516.76 and 253,647.54

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Solution

The fourth proportional to 519,663.28, 779,516.76 and 253,647.54 is: 380,481.97

Step by Step Solution

  1. Step 1: Write the proportion equation
    519,663.28 : 779,516.76 = 253,647.54 : x
  2. Step 2: Convert to fraction form
    519,663.28/779,516.76 = 253,647.54/x
  3. Step 3: Cross multiply
    519,663.28x = 779,516.76 × 253,647.54
  4. Step 4: Simplify right side
    519,663.28x = 197,722,508,562.77
  5. Step 5: Solve for x
    x = 197,722,508,562.77/519,663.28
  6. Step 6: Final answer
    x = 380,481.97

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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.