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Finding the Fourth Proportional to 462,809.96, 638,692.26 and 261,618.92

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Solution

The fourth proportional to 462,809.96, 638,692.26 and 261,618.92 is: 361,042.31

Step by Step Solution

  1. Step 1: Write the proportion equation
    462,809.96 : 638,692.26 = 261,618.92 : x
  2. Step 2: Convert to fraction form
    462,809.96/638,692.26 = 261,618.92/x
  3. Step 3: Cross multiply
    462,809.96x = 638,692.26 × 261,618.92
  4. Step 4: Simplify right side
    462,809.96x = 167,093,979,273.56
  5. Step 5: Solve for x
    x = 167,093,979,273.56/462,809.96
  6. Step 6: Final answer
    x = 361,042.31

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Half scale
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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 (1.38) or explore similar proportional relationships. Practicing with related ratios helps build understanding of proportional relationships.