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Finding the Fourth Proportional to 105,187.44, 145,169.17 and 62,745.97

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Solution

The fourth proportional to 105,187.44, 145,169.17 and 62,745.97 is: 86,595.70

Step by Step Solution

  1. Step 1: Write the proportion equation
    105,187.44 : 145,169.17 = 62,745.97 : x
  2. Step 2: Convert to fraction form
    105,187.44/145,169.17 = 62,745.97/x
  3. Step 3: Cross multiply
    105,187.44x = 145,169.17 × 62,745.97
  4. Step 4: Simplify right side
    105,187.44x = 9,108,779,865.96
  5. Step 5: Solve for x
    x = 9,108,779,865.96/105,187.44
  6. Step 6: Final answer
    x = 86,595.70

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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.