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Finding the Fourth Proportional to 11,644,608.70, 17,466,913.05 and 8,472,000.70

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Solution

The fourth proportional to 11,644,608.70, 17,466,913.05 and 8,472,000.70 is: 12,708,001.05

Step by Step Solution

  1. Step 1: Write the proportion equation
    11,644,608.70 : 17,466,913.05 = 8,472,000.70 : x
  2. Step 2: Convert to fraction form
    11,644,608.70/17,466,913.05 = 8,472,000.70/x
  3. Step 3: Cross multiply
    11,644,608.70x = 17,466,913.05 × 8,472,000.70
  4. Step 4: Simplify right side
    11,644,608.70x = 147,979,699,586,439.12
  5. Step 5: Solve for x
    x = 147,979,699,586,439.12/11,644,608.70
  6. Step 6: Final answer
    x = 12,708,001.05

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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.