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Finding the Fourth Proportional to 43,989.70, 65,983.62 and 10,709.95

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Solution

The fourth proportional to 43,989.70, 65,983.62 and 10,709.95 is: 16,064.70

Step by Step Solution

  1. Step 1: Write the proportion equation
    43,989.70 : 65,983.62 = 10,709.95 : x
  2. Step 2: Convert to fraction form
    43,989.70/65,983.62 = 10,709.95/x
  3. Step 3: Cross multiply
    43,989.70x = 65,983.62 × 10,709.95
  4. Step 4: Simplify right side
    43,989.70x = 706,681,271.02
  5. Step 5: Solve for x
    x = 706,681,271.02/43,989.70
  6. Step 6: Final answer
    x = 16,064.70

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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.