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Finding the Fourth Proportional to 92,991.90, 128,327.31 and 50,551.50

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Solution

The fourth proportional to 92,991.90, 128,327.31 and 50,551.50 is: 69,760.25

Step by Step Solution

  1. Step 1: Write the proportion equation
    92,991.90 : 128,327.31 = 50,551.50 : x
  2. Step 2: Convert to fraction form
    92,991.90/128,327.31 = 50,551.50/x
  3. Step 3: Cross multiply
    92,991.90x = 128,327.31 × 50,551.50
  4. Step 4: Simplify right side
    92,991.90x = 6,487,138,011.47
  5. Step 5: Solve for x
    x = 6,487,138,011.47/92,991.90
  6. Step 6: Final answer
    x = 69,760.25

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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.