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Finding the Fourth Proportional to 90,643.98, 125,108.69 and 50,371.59

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Solution

The fourth proportional to 90,643.98, 125,108.69 and 50,371.59 is: 69,523.91

Step by Step Solution

  1. Step 1: Write the proportion equation
    90,643.98 : 125,108.69 = 50,371.59 : x
  2. Step 2: Convert to fraction form
    90,643.98/125,108.69 = 50,371.59/x
  3. Step 3: Cross multiply
    90,643.98x = 125,108.69 × 50,371.59
  4. Step 4: Simplify right side
    90,643.98x = 6,301,923,638.12
  5. Step 5: Solve for x
    x = 6,301,923,638.12/90,643.98
  6. Step 6: Final answer
    x = 69,523.91

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These problems maintain the same ratio (1.38) or explore similar proportional relationships. Practicing with related ratios helps build understanding of proportional relationships.