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Finding the Fourth Proportional to 191,879.61, 264,712.19 and 140,803.61

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Solution

The fourth proportional to 191,879.61, 264,712.19 and 140,803.61 is: 194,249.04

Step by Step Solution

  1. Step 1: Write the proportion equation
    191,879.61 : 264,712.19 = 140,803.61 : x
  2. Step 2: Convert to fraction form
    191,879.61/264,712.19 = 140,803.61/x
  3. Step 3: Cross multiply
    191,879.61x = 264,712.19 × 140,803.61
  4. Step 4: Simplify right side
    191,879.61x = 37,272,429,935.43
  5. Step 5: Solve for x
    x = 37,272,429,935.43/191,879.61
  6. Step 6: Final answer
    x = 194,249.04

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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.