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Finding the Fourth Proportional to 7,216,392.82, 9,958,542.82 and 3,908,604.76

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Solution

The fourth proportional to 7,216,392.82, 9,958,542.82 and 3,908,604.76 is: 5,393,831.63

Step by Step Solution

  1. Step 1: Write the proportion equation
    7,216,392.82 : 9,958,542.82 = 3,908,604.76 : x
  2. Step 2: Convert to fraction form
    7,216,392.82/9,958,542.82 = 3,908,604.76/x
  3. Step 3: Cross multiply
    7,216,392.82x = 9,958,542.82 × 3,908,604.76
  4. Step 4: Simplify right side
    7,216,392.82x = 38,924,007,868,915.82
  5. Step 5: Solve for x
    x = 38,924,007,868,915.82/7,216,392.82
  6. Step 6: Final answer
    x = 5,393,831.63

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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.