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Finding the Fourth Proportional to 43,435.88, 65,153.87 and 17,139.94

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Solution

The fourth proportional to 43,435.88, 65,153.87 and 17,139.94 is: 25,709.93

Step by Step Solution

  1. Step 1: Write the proportion equation
    43,435.88 : 65,153.87 = 17,139.94 : x
  2. Step 2: Convert to fraction form
    43,435.88/65,153.87 = 17,139.94/x
  3. Step 3: Cross multiply
    43,435.88x = 65,153.87 × 17,139.94
  4. Step 4: Simplify right side
    43,435.88x = 1,116,733,238.26
  5. Step 5: Solve for x
    x = 1,116,733,238.26/43,435.88
  6. Step 6: Final answer
    x = 25,709.93

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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.