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Finding the Fourth Proportional to 115,941.20, 162,667.60 and 115,941.20

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Solution

The fourth proportional to 115,941.20, 162,667.60 and 115,941.20 is: 162,667.60

Step by Step Solution

  1. Step 1: Write the proportion equation
    115,941.20 : 162,667.60 = 115,941.20 : x
  2. Step 2: Convert to fraction form
    115,941.20/162,667.60 = 115,941.20/x
  3. Step 3: Cross multiply
    115,941.20x = 162,667.60 × 115,941.20
  4. Step 4: Simplify right side
    115,941.20x = 18,859,876,745.12
  5. Step 5: Solve for x
    x = 18,859,876,745.12/115,941.20
  6. Step 6: Final answer
    x = 162,667.60

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Why These Related Problems?

These problems maintain the same ratio (1.40) or explore similar proportional relationships. Practicing with related ratios helps build understanding of proportional relationships.