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Finding the Fourth Proportional to 191,671.78, 264,508.87 and 105,633.91

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Solution

The fourth proportional to 191,671.78, 264,508.87 and 105,633.91 is: 145,775.79

Step by Step Solution

  1. Step 1: Write the proportion equation
    191,671.78 : 264,508.87 = 105,633.91 : x
  2. Step 2: Convert to fraction form
    191,671.78/264,508.87 = 105,633.91/x
  3. Step 3: Cross multiply
    191,671.78x = 264,508.87 × 105,633.91
  4. Step 4: Simplify right side
    191,671.78x = 27,941,105,763.34
  5. Step 5: Solve for x
    x = 27,941,105,763.34/191,671.78
  6. Step 6: Final answer
    x = 145,775.79

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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.