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Finding the Fourth Proportional to 11,644,611.70, 17,466,917.55 and 8,472,003.70

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Solution

The fourth proportional to 11,644,611.70, 17,466,917.55 and 8,472,003.70 is: 12,708,005.55

Step by Step Solution

  1. Step 1: Write the proportion equation
    11,644,611.70 : 17,466,917.55 = 8,472,003.70 : x
  2. Step 2: Convert to fraction form
    11,644,611.70/17,466,917.55 = 8,472,003.70/x
  3. Step 3: Cross multiply
    11,644,611.70x = 17,466,917.55 × 8,472,003.70
  4. Step 4: Simplify right side
    11,644,611.70x = 147,979,790,111,194.94
  5. Step 5: Solve for x
    x = 147,979,790,111,194.94/11,644,611.70
  6. Step 6: Final answer
    x = 12,708,005.55

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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.