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Finding the Fourth Proportional to 328,879.95, 493,264.29 and 92,168.15

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Solution

The fourth proportional to 328,879.95, 493,264.29 and 92,168.15 is: 138,236.63

Step by Step Solution

  1. Step 1: Write the proportion equation
    328,879.95 : 493,264.29 = 92,168.15 : x
  2. Step 2: Convert to fraction form
    328,879.95/493,264.29 = 92,168.15/x
  3. Step 3: Cross multiply
    328,879.95x = 493,264.29 × 92,168.15
  4. Step 4: Simplify right side
    328,879.95x = 45,463,256,609.52
  5. Step 5: Solve for x
    x = 45,463,256,609.52/328,879.95
  6. Step 6: Final answer
    x = 138,236.63

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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.