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Finding the Fourth Proportional to 694,705, 958,733.22 and 388,778.76

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Solution

The fourth proportional to 694,705, 958,733.22 and 388,778.76 is: 536,537.25

Step by Step Solution

  1. Step 1: Write the proportion equation
    694,705 : 958,733.22 = 388,778.76 : x
  2. Step 2: Convert to fraction form
    694,705/958,733.22 = 388,778.76/x
  3. Step 3: Cross multiply
    694,705x = 958,733.22 × 388,778.76
  4. Step 4: Simplify right side
    694,705x = 372,735,112,442.41
  5. Step 5: Solve for x
    x = 372,735,112,442.41/694,705
  6. Step 6: Final answer
    x = 536,537.25

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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.