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Finding the Fourth Proportional to 159,603.96, 220,232.75 and 91,623.90

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Solution

The fourth proportional to 159,603.96, 220,232.75 and 91,623.90 is: 126,429.09

Step by Step Solution

  1. Step 1: Write the proportion equation
    159,603.96 : 220,232.75 = 91,623.90 : x
  2. Step 2: Convert to fraction form
    159,603.96/220,232.75 = 91,623.90/x
  3. Step 3: Cross multiply
    159,603.96x = 220,232.75 × 91,623.90
  4. Step 4: Simplify right side
    159,603.96x = 20,178,583,004.61
  5. Step 5: Solve for x
    x = 20,178,583,004.61/159,603.96
  6. Step 6: Final answer
    x = 126,429.09

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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.