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Finding the Fourth Proportional to 159,857.81, 220,603.79 and 88,237.85

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Solution

The fourth proportional to 159,857.81, 220,603.79 and 88,237.85 is: 121,768.24

Step by Step Solution

  1. Step 1: Write the proportion equation
    159,857.81 : 220,603.79 = 88,237.85 : x
  2. Step 2: Convert to fraction form
    159,857.81/220,603.79 = 88,237.85/x
  3. Step 3: Cross multiply
    159,857.81x = 220,603.79 × 88,237.85
  4. Step 4: Simplify right side
    159,857.81x = 19,465,604,131.45
  5. Step 5: Solve for x
    x = 19,465,604,131.45/159,857.81
  6. Step 6: Final answer
    x = 121,768.24

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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.