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Finding the Fourth Proportional to 669,361.50, 923,625.91 and 393,731.84

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Solution

The fourth proportional to 669,361.50, 923,625.91 and 393,731.84 is: 543,295.26

Step by Step Solution

  1. Step 1: Write the proportion equation
    669,361.50 : 923,625.91 = 393,731.84 : x
  2. Step 2: Convert to fraction form
    669,361.50/923,625.91 = 393,731.84/x
  3. Step 3: Cross multiply
    669,361.50x = 923,625.91 × 393,731.84
  4. Step 4: Simplify right side
    669,361.50x = 363,660,927,729.18
  5. Step 5: Solve for x
    x = 363,660,927,729.18/669,361.50
  6. Step 6: Final answer
    x = 543,295.26

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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.