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Finding the Fourth Proportional to 7,033,908.54, 9,706,793.85 and 3,978,057.18

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Solution

The fourth proportional to 7,033,908.54, 9,706,793.85 and 3,978,057.18 is: 5,489,718.95

Step by Step Solution

  1. Step 1: Write the proportion equation
    7,033,908.54 : 9,706,793.85 = 3,978,057.18 : x
  2. Step 2: Convert to fraction form
    7,033,908.54/9,706,793.85 = 3,978,057.18/x
  3. Step 3: Cross multiply
    7,033,908.54x = 9,706,793.85 × 3,978,057.18
  4. Step 4: Simplify right side
    7,033,908.54x = 38,614,180,969,772.34
  5. Step 5: Solve for x
    x = 38,614,180,969,772.34/7,033,908.54
  6. Step 6: Final answer
    x = 5,489,718.95

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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.