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Finding the Fourth Proportional to 191,679.47, 264,519.42 and 105,641.52

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Solution

The fourth proportional to 191,679.47, 264,519.42 and 105,641.52 is: 145,786.27

Step by Step Solution

  1. Step 1: Write the proportion equation
    191,679.47 : 264,519.42 = 105,641.52 : x
  2. Step 2: Convert to fraction form
    191,679.47/264,519.42 = 105,641.52/x
  3. Step 3: Cross multiply
    191,679.47x = 264,519.42 × 105,641.52
  4. Step 4: Simplify right side
    191,679.47x = 27,944,235,036.33
  5. Step 5: Solve for x
    x = 27,944,235,036.33/191,679.47
  6. Step 6: Final answer
    x = 145,786.27

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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.