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Finding the Fourth Proportional to 171,316.43, 256,991.85 and 58,981.78

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Solution

The fourth proportional to 171,316.43, 256,991.85 and 58,981.78 is: 88,478.59

Step by Step Solution

  1. Step 1: Write the proportion equation
    171,316.43 : 256,991.85 = 58,981.78 : x
  2. Step 2: Convert to fraction form
    171,316.43/256,991.85 = 58,981.78/x
  3. Step 3: Cross multiply
    171,316.43x = 256,991.85 × 58,981.78
  4. Step 4: Simplify right side
    171,316.43x = 15,157,835,178.62
  5. Step 5: Solve for x
    x = 15,157,835,178.62/171,316.43
  6. Step 6: Final answer
    x = 88,478.59

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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.