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Finding the Fourth Proportional to 43,706.94, 65,543.76 and 15,621.81

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Solution

The fourth proportional to 43,706.94, 65,543.76 and 15,621.81 is: 23,426.76

Step by Step Solution

  1. Step 1: Write the proportion equation
    43,706.94 : 65,543.76 = 15,621.81 : x
  2. Step 2: Convert to fraction form
    43,706.94/65,543.76 = 15,621.81/x
  3. Step 3: Cross multiply
    43,706.94x = 65,543.76 × 15,621.81
  4. Step 4: Simplify right side
    43,706.94x = 1,023,912,165.41
  5. Step 5: Solve for x
    x = 1,023,912,165.41/43,706.94
  6. Step 6: Final answer
    x = 23,426.76

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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.