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Finding the Fourth Proportional to 43,440, 65,160.72 and 17,144.52

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Solution

The fourth proportional to 43,440, 65,160.72 and 17,144.52 is: 25,717.06

Step by Step Solution

  1. Step 1: Write the proportion equation
    43,440 : 65,160.72 = 17,144.52 : x
  2. Step 2: Convert to fraction form
    43,440/65,160.72 = 17,144.52/x
  3. Step 3: Cross multiply
    43,440x = 65,160.72 × 17,144.52
  4. Step 4: Simplify right side
    43,440x = 1,117,149,267.25
  5. Step 5: Solve for x
    x = 1,117,149,267.25/43,440
  6. Step 6: Final answer
    x = 25,717.06

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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.