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Finding the Fourth Proportional to 57,101.70, 85,656.60 and 17,661.99

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Solution

The fourth proportional to 57,101.70, 85,656.60 and 17,661.99 is: 26,494.24

Step by Step Solution

  1. Step 1: Write the proportion equation
    57,101.70 : 85,656.60 = 17,661.99 : x
  2. Step 2: Convert to fraction form
    57,101.70/85,656.60 = 17,661.99/x
  3. Step 3: Cross multiply
    57,101.70x = 85,656.60 × 17,661.99
  4. Step 4: Simplify right side
    57,101.70x = 1,512,866,012.63
  5. Step 5: Solve for x
    x = 1,512,866,012.63/57,101.70
  6. Step 6: Final answer
    x = 26,494.24

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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.