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Finding the Fourth Proportional to 694,221.33, 958,012.74 and 392,415.33

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Solution

The fourth proportional to 694,221.33, 958,012.74 and 392,415.33 is: 541,525.98

Step by Step Solution

  1. Step 1: Write the proportion equation
    694,221.33 : 958,012.74 = 392,415.33 : x
  2. Step 2: Convert to fraction form
    694,221.33/958,012.74 = 392,415.33/x
  3. Step 3: Cross multiply
    694,221.33x = 958,012.74 × 392,415.33
  4. Step 4: Simplify right side
    694,221.33x = 375,938,885,511.30
  5. Step 5: Solve for x
    x = 375,938,885,511.30/694,221.33
  6. Step 6: Final answer
    x = 541,525.98

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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.