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Finding the Fourth Proportional to 519,724.38, 778,958.73 and 253,085.34

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Solution

The fourth proportional to 519,724.38, 778,958.73 and 253,085.34 is: 379,322.28

Step by Step Solution

  1. Step 1: Write the proportion equation
    519,724.38 : 778,958.73 = 253,085.34 : x
  2. Step 2: Convert to fraction form
    519,724.38/778,958.73 = 253,085.34/x
  3. Step 3: Cross multiply
    519,724.38x = 778,958.73 × 253,085.34
  4. Step 4: Simplify right side
    519,724.38x = 197,143,035,028.02
  5. Step 5: Solve for x
    x = 197,143,035,028.02/519,724.38
  6. Step 6: Final answer
    x = 379,322.28

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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.