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Finding the Fourth Proportional to 253,330.72, 379,811.76 and 164,672.80

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Solution

The fourth proportional to 253,330.72, 379,811.76 and 164,672.80 is: 246,889.39

Step by Step Solution

  1. Step 1: Write the proportion equation
    253,330.72 : 379,811.76 = 164,672.80 : x
  2. Step 2: Convert to fraction form
    253,330.72/379,811.76 = 164,672.80/x
  3. Step 3: Cross multiply
    253,330.72x = 379,811.76 × 164,672.80
  4. Step 4: Simplify right side
    253,330.72x = 62,544,665,992.13
  5. Step 5: Solve for x
    x = 62,544,665,992.13/253,330.72
  6. Step 6: Final answer
    x = 246,889.39

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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.