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Finding the Fourth Proportional to 697,705.23, 962,843.32 and 391,847.82

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Solution

The fourth proportional to 697,705.23, 962,843.32 and 391,847.82 is: 540,755.67

Step by Step Solution

  1. Step 1: Write the proportion equation
    697,705.23 : 962,843.32 = 391,847.82 : x
  2. Step 2: Convert to fraction form
    697,705.23/962,843.32 = 391,847.82/x
  3. Step 3: Cross multiply
    697,705.23x = 962,843.32 × 391,847.82
  4. Step 4: Simplify right side
    697,705.23x = 377,288,055,943.56
  5. Step 5: Solve for x
    x = 377,288,055,943.56/697,705.23
  6. Step 6: Final answer
    x = 540,755.67

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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.