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Finding the Fourth Proportional to 707,553.20, 976,410.76 and 385,257.44

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Solution

The fourth proportional to 707,553.20, 976,410.76 and 385,257.44 is: 531,648.38

Step by Step Solution

  1. Step 1: Write the proportion equation
    707,553.20 : 976,410.76 = 385,257.44 : x
  2. Step 2: Convert to fraction form
    707,553.20/976,410.76 = 385,257.44/x
  3. Step 3: Cross multiply
    707,553.20x = 976,410.76 × 385,257.44
  4. Step 4: Simplify right side
    707,553.20x = 376,169,509,786.05
  5. Step 5: Solve for x
    x = 376,169,509,786.05/707,553.20
  6. Step 6: Final answer
    x = 531,648.38

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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.