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Finding the Fourth Proportional to 451,029.32, 622,420.70 and 247,087.62

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Solution

The fourth proportional to 451,029.32, 622,420.70 and 247,087.62 is: 340,981.05

Step by Step Solution

  1. Step 1: Write the proportion equation
    451,029.32 : 622,420.70 = 247,087.62 : x
  2. Step 2: Convert to fraction form
    451,029.32/622,420.70 = 247,087.62/x
  3. Step 3: Cross multiply
    451,029.32x = 622,420.70 × 247,087.62
  4. Step 4: Simplify right side
    451,029.32x = 153,792,449,401.73
  5. Step 5: Solve for x
    x = 153,792,449,401.73/451,029.32
  6. Step 6: Final answer
    x = 340,981.05

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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.