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Finding the Fourth Proportional to 694,086.64, 957,888.38 and 388,191.49

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Solution

The fourth proportional to 694,086.64, 957,888.38 and 388,191.49 is: 535,731.56

Step by Step Solution

  1. Step 1: Write the proportion equation
    694,086.64 : 957,888.38 = 388,191.49 : x
  2. Step 2: Convert to fraction form
    694,086.64/957,888.38 = 388,191.49/x
  3. Step 3: Cross multiply
    694,086.64x = 957,888.38 × 388,191.49
  4. Step 4: Simplify right side
    694,086.64x = 371,844,116,061.64
  5. Step 5: Solve for x
    x = 371,844,116,061.64/694,086.64
  6. Step 6: Final answer
    x = 535,731.56

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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.