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Finding the Fourth Proportional to 6,644,562.30, 9,966,843.45 and 2,156,838.30

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Solution

The fourth proportional to 6,644,562.30, 9,966,843.45 and 2,156,838.30 is: 3,235,257.45

Step by Step Solution

  1. Step 1: Write the proportion equation
    6,644,562.30 : 9,966,843.45 = 2,156,838.30 : x
  2. Step 2: Convert to fraction form
    6,644,562.30/9,966,843.45 = 2,156,838.30/x
  3. Step 3: Cross multiply
    6,644,562.30x = 9,966,843.45 × 2,156,838.30
  4. Step 4: Simplify right side
    6,644,562.30x = 21,496,869,683,064.13
  5. Step 5: Solve for x
    x = 21,496,869,683,064.13/6,644,562.30
  6. Step 6: Final answer
    x = 3,235,257.45

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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.