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Finding the Fourth Proportional to 3,982,992.40, 5,963,429.40 and 3,872,400.40

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Solution

The fourth proportional to 3,982,992.40, 5,963,429.40 and 3,872,400.40 is: 5,797,848.47

Step by Step Solution

  1. Step 1: Write the proportion equation
    3,982,992.40 : 5,963,429.40 = 3,872,400.40 : x
  2. Step 2: Convert to fraction form
    3,982,992.40/5,963,429.40 = 3,872,400.40/x
  3. Step 3: Cross multiply
    3,982,992.40x = 5,963,429.40 × 3,872,400.40
  4. Step 4: Simplify right side
    3,982,992.40x = 23,092,786,393,931.76
  5. Step 5: Solve for x
    x = 23,092,786,393,931.76/3,982,992.40
  6. Step 6: Final answer
    x = 5,797,848.47

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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.