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Finding the Fourth Proportional to 15,837,864.90, 21,856,253.54 and 8,594,520.90

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Solution

The fourth proportional to 15,837,864.90, 21,856,253.54 and 8,594,520.90 is: 11,860,438.83

Step by Step Solution

  1. Step 1: Write the proportion equation
    15,837,864.90 : 21,856,253.54 = 8,594,520.90 : x
  2. Step 2: Convert to fraction form
    15,837,864.90/21,856,253.54 = 8,594,520.90/x
  3. Step 3: Cross multiply
    15,837,864.90x = 21,856,253.54 × 8,594,520.90
  4. Step 4: Simplify right side
    15,837,864.90x = 187,844,027,845,229
  5. Step 5: Solve for x
    x = 187,844,027,845,229/15,837,864.90
  6. Step 6: Final answer
    x = 11,860,438.83

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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.