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Finding the Fourth Proportional to 698,249.76, 963,585.34 and 396,443.76

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Solution

The fourth proportional to 698,249.76, 963,585.34 and 396,443.76 is: 547,092.77

Step by Step Solution

  1. Step 1: Write the proportion equation
    698,249.76 : 963,585.34 = 396,443.76 : x
  2. Step 2: Convert to fraction form
    698,249.76/963,585.34 = 396,443.76/x
  3. Step 3: Cross multiply
    698,249.76x = 963,585.34 × 396,443.76
  4. Step 4: Simplify right side
    698,249.76x = 382,007,395,270.48
  5. Step 5: Solve for x
    x = 382,007,395,270.48/698,249.76
  6. Step 6: Final answer
    x = 547,092.77

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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.