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Finding the Fourth Proportional to 553,783.30, 764,189.85 and 327,501.70

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Solution

The fourth proportional to 553,783.30, 764,189.85 and 327,501.70 is: 451,933.95

Step by Step Solution

  1. Step 1: Write the proportion equation
    553,783.30 : 764,189.85 = 327,501.70 : x
  2. Step 2: Convert to fraction form
    553,783.30/764,189.85 = 327,501.70/x
  3. Step 3: Cross multiply
    553,783.30x = 764,189.85 × 327,501.70
  4. Step 4: Simplify right side
    553,783.30x = 250,273,474,997.75
  5. Step 5: Solve for x
    x = 250,273,474,997.75/553,783.30
  6. Step 6: Final answer
    x = 451,933.95

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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.