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Finding the Fourth Proportional to 15,835,997.50, 21,853,676.55 and 8,592,653.50

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Solution

The fourth proportional to 15,835,997.50, 21,853,676.55 and 8,592,653.50 is: 11,857,861.83

Step by Step Solution

  1. Step 1: Write the proportion equation
    15,835,997.50 : 21,853,676.55 = 8,592,653.50 : x
  2. Step 2: Convert to fraction form
    15,835,997.50/21,853,676.55 = 8,592,653.50/x
  3. Step 3: Cross multiply
    15,835,997.50x = 21,853,676.55 × 8,592,653.50
  4. Step 4: Simplify right side
    15,835,997.50x = 187,781,070,295,225.44
  5. Step 5: Solve for x
    x = 187,781,070,295,225.44/15,835,997.50
  6. Step 6: Final answer
    x = 11,857,861.83

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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.