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Finding the Fourth Proportional to 64,775.21, 89,396.17 and 37,916.09

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Solution

The fourth proportional to 64,775.21, 89,396.17 and 37,916.09 is: 52,327.94

Step by Step Solution

  1. Step 1: Write the proportion equation
    64,775.21 : 89,396.17 = 37,916.09 : x
  2. Step 2: Convert to fraction form
    64,775.21/89,396.17 = 37,916.09/x
  3. Step 3: Cross multiply
    64,775.21x = 89,396.17 × 37,916.09
  4. Step 4: Simplify right side
    64,775.21x = 3,389,553,037.79
  5. Step 5: Solve for x
    x = 3,389,553,037.79/64,775.21
  6. Step 6: Final answer
    x = 52,327.94

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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.