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Finding the Fourth Proportional to 123,317.97, 184,978.38 and 43,358.28

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Solution

The fourth proportional to 123,317.97, 184,978.38 and 43,358.28 is: 65,037.92

Step by Step Solution

  1. Step 1: Write the proportion equation
    123,317.97 : 184,978.38 = 43,358.28 : x
  2. Step 2: Convert to fraction form
    123,317.97/184,978.38 = 43,358.28/x
  3. Step 3: Cross multiply
    123,317.97x = 184,978.38 × 43,358.28
  4. Step 4: Simplify right side
    123,317.97x = 8,020,344,393.99
  5. Step 5: Solve for x
    x = 8,020,344,393.99/123,317.97
  6. Step 6: Final answer
    x = 65,037.92

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Why These Related Problems?

These problems maintain the same ratio (1.50) or explore similar proportional relationships. Practicing with related ratios helps build understanding of proportional relationships.