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Finding the Fourth Proportional to 538,939.70, 808,409.55 and 183,965.30

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Solution

The fourth proportional to 538,939.70, 808,409.55 and 183,965.30 is: 275,947.95

Step by Step Solution

  1. Step 1: Write the proportion equation
    538,939.70 : 808,409.55 = 183,965.30 : x
  2. Step 2: Convert to fraction form
    538,939.70/808,409.55 = 183,965.30/x
  3. Step 3: Cross multiply
    538,939.70x = 808,409.55 × 183,965.30
  4. Step 4: Simplify right side
    538,939.70x = 148,719,305,388.62
  5. Step 5: Solve for x
    x = 148,719,305,388.62/538,939.70
  6. Step 6: Final answer
    x = 275,947.95

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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.