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Finding the Fourth Proportional to 664,453.10, 996,644.82 and 191,119.88

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Solution

The fourth proportional to 664,453.10, 996,644.82 and 191,119.88 is: 286,669.80

Step by Step Solution

  1. Step 1: Write the proportion equation
    664,453.10 : 996,644.82 = 191,119.88 : x
  2. Step 2: Convert to fraction form
    664,453.10/996,644.82 = 191,119.88/x
  3. Step 3: Cross multiply
    664,453.10x = 996,644.82 × 191,119.88
  4. Step 4: Simplify right side
    664,453.10x = 190,478,638,401.02
  5. Step 5: Solve for x
    x = 190,478,638,401.02/664,453.10
  6. Step 6: Final answer
    x = 286,669.80

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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.