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Finding the Fourth Proportional to 91,568.96, 137,400.32 and 43,591.86

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Solution

The fourth proportional to 91,568.96, 137,400.32 and 43,591.86 is: 65,410.11

Step by Step Solution

  1. Step 1: Write the proportion equation
    91,568.96 : 137,400.32 = 43,591.86 : x
  2. Step 2: Convert to fraction form
    91,568.96/137,400.32 = 43,591.86/x
  3. Step 3: Cross multiply
    91,568.96x = 137,400.32 × 43,591.86
  4. Step 4: Simplify right side
    91,568.96x = 5,989,535,295.44
  5. Step 5: Solve for x
    x = 5,989,535,295.44/91,568.96
  6. Step 6: Final answer
    x = 65,410.11

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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.