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Finding the Fourth Proportional to 553,777.56, 764,212.91 and 299,128.75

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Solution

The fourth proportional to 553,777.56, 764,212.91 and 299,128.75 is: 412,797.61

Step by Step Solution

  1. Step 1: Write the proportion equation
    553,777.56 : 764,212.91 = 299,128.75 : x
  2. Step 2: Convert to fraction form
    553,777.56/764,212.91 = 299,128.75/x
  3. Step 3: Cross multiply
    553,777.56x = 764,212.91 × 299,128.75
  4. Step 4: Simplify right side
    553,777.56x = 228,598,052,502.16
  5. Step 5: Solve for x
    x = 228,598,052,502.16/553,777.56
  6. Step 6: Final answer
    x = 412,797.61

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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.