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Finding the Fourth Proportional to 519,812.70, 779,719.05 and 295,086.30

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Solution

The fourth proportional to 519,812.70, 779,719.05 and 295,086.30 is: 442,629.45

Step by Step Solution

  1. Step 1: Write the proportion equation
    519,812.70 : 779,719.05 = 295,086.30 : x
  2. Step 2: Convert to fraction form
    519,812.70/779,719.05 = 295,086.30/x
  3. Step 3: Cross multiply
    519,812.70x = 779,719.05 × 295,086.30
  4. Step 4: Simplify right side
    519,812.70x = 230,084,409,504.02
  5. Step 5: Solve for x
    x = 230,084,409,504.02/519,812.70
  6. Step 6: Final answer
    x = 442,629.45

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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.