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Finding the Fourth Proportional to 56,603.75, 84,905.85 and 17,161.20

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Solution

The fourth proportional to 56,603.75, 84,905.85 and 17,161.20 is: 25,741.87

Step by Step Solution

  1. Step 1: Write the proportion equation
    56,603.75 : 84,905.85 = 17,161.20 : x
  2. Step 2: Convert to fraction form
    56,603.75/84,905.85 = 17,161.20/x
  3. Step 3: Cross multiply
    56,603.75x = 84,905.85 × 17,161.20
  4. Step 4: Simplify right side
    56,603.75x = 1,457,086,273.02
  5. Step 5: Solve for x
    x = 1,457,086,273.02/56,603.75
  6. Step 6: Final answer
    x = 25,741.87

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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.