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Finding the Fourth Proportional to 246,471.86, 340,146.90 and 139,002.68

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Solution

The fourth proportional to 246,471.86, 340,146.90 and 139,002.68 is: 191,832.57

Step by Step Solution

  1. Step 1: Write the proportion equation
    246,471.86 : 340,146.90 = 139,002.68 : x
  2. Step 2: Convert to fraction form
    246,471.86/340,146.90 = 139,002.68/x
  3. Step 3: Cross multiply
    246,471.86x = 340,146.90 × 139,002.68
  4. Step 4: Simplify right side
    246,471.86x = 47,281,328,992.96
  5. Step 5: Solve for x
    x = 47,281,328,992.96/246,471.86
  6. Step 6: Final answer
    x = 191,832.57

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Why These Related Problems?

These problems maintain the same ratio (1.38) or explore similar proportional relationships. Practicing with related ratios helps build understanding of proportional relationships.