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Finding the Fourth Proportional to 619,906.20, 928,016.10 and 371,074.20

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Solution

The fourth proportional to 619,906.20, 928,016.10 and 371,074.20 is: 555,507.97

Step by Step Solution

  1. Step 1: Write the proportion equation
    619,906.20 : 928,016.10 = 371,074.20 : x
  2. Step 2: Convert to fraction form
    619,906.20/928,016.10 = 371,074.20/x
  3. Step 3: Cross multiply
    619,906.20x = 928,016.10 × 371,074.20
  4. Step 4: Simplify right side
    619,906.20x = 344,362,831,894.62
  5. Step 5: Solve for x
    x = 344,362,831,894.62/619,906.20
  6. Step 6: Final answer
    x = 555,507.97

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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.