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Finding the Fourth Proportional to 6,899,167.71, 9,451,893.51 and 6,640,586.42

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Solution

The fourth proportional to 6,899,167.71, 9,451,893.51 and 6,640,586.42 is: 9,097,635.87

Step by Step Solution

  1. Step 1: Write the proportion equation
    6,899,167.71 : 9,451,893.51 = 6,640,586.42 : x
  2. Step 2: Convert to fraction form
    6,899,167.71/9,451,893.51 = 6,640,586.42/x
  3. Step 3: Cross multiply
    6,899,167.71x = 9,451,893.51 × 6,640,586.42
  4. Step 4: Simplify right side
    6,899,167.71x = 62,766,115,638,532.66
  5. Step 5: Solve for x
    x = 62,766,115,638,532.66/6,899,167.71
  6. Step 6: Final answer
    x = 9,097,635.87

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Why These Related Problems?

These problems maintain the same ratio (1.37) or explore similar proportional relationships. Practicing with related ratios helps build understanding of proportional relationships.