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Finding the Fourth Proportional to 652,571.97, 978,818.73 and 388,016.11

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Solution

The fourth proportional to 652,571.97, 978,818.73 and 388,016.11 is: 582,000.84

Step by Step Solution

  1. Step 1: Write the proportion equation
    652,571.97 : 978,818.73 = 388,016.11 : x
  2. Step 2: Convert to fraction form
    652,571.97/978,818.73 = 388,016.11/x
  3. Step 3: Cross multiply
    652,571.97x = 978,818.73 × 388,016.11
  4. Step 4: Simplify right side
    652,571.97x = 379,797,436,009.74
  5. Step 5: Solve for x
    x = 379,797,436,009.74/652,571.97
  6. Step 6: Final answer
    x = 582,000.84

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Why These Related Problems?

These problems maintain the same ratio (1.50) or explore similar proportional relationships. Practicing with related ratios helps build understanding of proportional relationships.