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Finding the Fourth Proportional to 578,449.80, 867,674.70 and 204,472.80

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Solution

The fourth proportional to 578,449.80, 867,674.70 and 204,472.80 is: 306,709.20

Step by Step Solution

  1. Step 1: Write the proportion equation
    578,449.80 : 867,674.70 = 204,472.80 : x
  2. Step 2: Convert to fraction form
    578,449.80/867,674.70 = 204,472.80/x
  3. Step 3: Cross multiply
    578,449.80x = 867,674.70 × 204,472.80
  4. Step 4: Simplify right side
    578,449.80x = 177,415,875,398.16
  5. Step 5: Solve for x
    x = 177,415,875,398.16/578,449.80
  6. Step 6: Final answer
    x = 306,709.20

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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.