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Finding the Fourth Proportional to 403,990.56, 606,010.68 and 167,351.76

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Solution

The fourth proportional to 403,990.56, 606,010.68 and 167,351.76 is: 251,037.93

Step by Step Solution

  1. Step 1: Write the proportion equation
    403,990.56 : 606,010.68 = 167,351.76 : x
  2. Step 2: Convert to fraction form
    403,990.56/606,010.68 = 167,351.76/x
  3. Step 3: Cross multiply
    403,990.56x = 606,010.68 × 167,351.76
  4. Step 4: Simplify right side
    403,990.56x = 101,416,953,876.80
  5. Step 5: Solve for x
    x = 101,416,953,876.80/403,990.56
  6. Step 6: Final answer
    x = 251,037.93

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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.