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Finding the Fourth Proportional to 191,589.70, 264,383.37 and 105,531.91

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Solution

The fourth proportional to 191,589.70, 264,383.37 and 105,531.91 is: 145,628.30

Step by Step Solution

  1. Step 1: Write the proportion equation
    191,589.70 : 264,383.37 = 105,531.91 : x
  2. Step 2: Convert to fraction form
    191,589.70/264,383.37 = 105,531.91/x
  3. Step 3: Cross multiply
    191,589.70x = 264,383.37 × 105,531.91
  4. Step 4: Simplify right side
    191,589.70x = 27,900,882,008.34
  5. Step 5: Solve for x
    x = 27,900,882,008.34/191,589.70
  6. Step 6: Final answer
    x = 145,628.30

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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.