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Finding the Fourth Proportional to 694,987, 959,075.58 and 393,181

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Solution

The fourth proportional to 694,987, 959,075.58 and 393,181 is: 542,586.11

Step by Step Solution

  1. Step 1: Write the proportion equation
    694,987 : 959,075.58 = 393,181 : x
  2. Step 2: Convert to fraction form
    694,987/959,075.58 = 393,181/x
  3. Step 3: Cross multiply
    694,987x = 959,075.58 × 393,181
  4. Step 4: Simplify right side
    694,987x = 377,090,295,619.98
  5. Step 5: Solve for x
    x = 377,090,295,619.98/694,987
  6. Step 6: Final answer
    x = 542,586.11

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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.