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Finding the Fourth Proportional to 698,243.27, 963,576.34 and 396,437.27

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Solution

The fourth proportional to 698,243.27, 963,576.34 and 396,437.27 is: 547,083.78

Step by Step Solution

  1. Step 1: Write the proportion equation
    698,243.27 : 963,576.34 = 396,437.27 : x
  2. Step 2: Convert to fraction form
    698,243.27/963,576.34 = 396,437.27/x
  3. Step 3: Cross multiply
    698,243.27x = 963,576.34 × 396,437.27
  4. Step 4: Simplify right side
    698,243.27x = 381,997,567,857.22
  5. Step 5: Solve for x
    x = 381,997,567,857.22/698,243.27
  6. Step 6: Final answer
    x = 547,083.78

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Double scale
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1.5x scale

Why These Related Problems?

These problems maintain the same ratio (1.38) or explore similar proportional relationships. Practicing with related ratios helps build understanding of proportional relationships.