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Finding the Fourth Proportional to 671,840.81, 927,245.62 and 396,228.96

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Solution

The fourth proportional to 671,840.81, 927,245.62 and 396,228.96 is: 546,858.06

Step by Step Solution

  1. Step 1: Write the proportion equation
    671,840.81 : 927,245.62 = 396,228.96 : x
  2. Step 2: Convert to fraction form
    671,840.81/927,245.62 = 396,228.96/x
  3. Step 3: Cross multiply
    671,840.81x = 927,245.62 × 396,228.96
  4. Step 4: Simplify right side
    671,840.81x = 367,401,561,059.78
  5. Step 5: Solve for x
    x = 367,401,561,059.78/671,840.81
  6. Step 6: Final answer
    x = 546,858.06

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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.