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Finding the Fourth Proportional to 90,735.59, 125,219.32 and 50,448.72

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Solution

The fourth proportional to 90,735.59, 125,219.32 and 50,448.72 is: 69,621.57

Step by Step Solution

  1. Step 1: Write the proportion equation
    90,735.59 : 125,219.32 = 50,448.72 : x
  2. Step 2: Convert to fraction form
    90,735.59/125,219.32 = 50,448.72/x
  3. Step 3: Cross multiply
    90,735.59x = 125,219.32 × 50,448.72
  4. Step 4: Simplify right side
    90,735.59x = 6,317,154,756.72
  5. Step 5: Solve for x
    x = 6,317,154,756.72/90,735.59
  6. Step 6: Final answer
    x = 69,621.57

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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.