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Finding the Fourth Proportional to 702,633.11, 969,577.20 and 396,783.89

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Solution

The fourth proportional to 702,633.11, 969,577.20 and 396,783.89 is: 547,529.87

Step by Step Solution

  1. Step 1: Write the proportion equation
    702,633.11 : 969,577.20 = 396,783.89 : x
  2. Step 2: Convert to fraction form
    702,633.11/969,577.20 = 396,783.89/x
  3. Step 3: Cross multiply
    702,633.11x = 969,577.20 × 396,783.89
  4. Step 4: Simplify right side
    702,633.11x = 384,712,611,859.34
  5. Step 5: Solve for x
    x = 384,712,611,859.34/702,633.11
  6. Step 6: Final answer
    x = 547,529.87

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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.