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Finding the Fourth Proportional to 7,193,797.28, 9,927,509.97 and 3,930,611.70

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Solution

The fourth proportional to 7,193,797.28, 9,927,509.97 and 3,930,611.70 is: 5,424,282.24

Step by Step Solution

  1. Step 1: Write the proportion equation
    7,193,797.28 : 9,927,509.97 = 3,930,611.70 : x
  2. Step 2: Convert to fraction form
    7,193,797.28/9,927,509.97 = 3,930,611.70/x
  3. Step 3: Cross multiply
    7,193,797.28x = 9,927,509.97 × 3,930,611.70
  4. Step 4: Simplify right side
    7,193,797.28x = 39,021,186,839,948.66
  5. Step 5: Solve for x
    x = 39,021,186,839,948.66/7,193,797.28
  6. Step 6: Final answer
    x = 5,424,282.24

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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.