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Finding the Fourth Proportional to 35,879.40, 53,811.90 and 17,159.40

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Solution

The fourth proportional to 35,879.40, 53,811.90 and 17,159.40 is: 25,735.66

Step by Step Solution

  1. Step 1: Write the proportion equation
    35,879.40 : 53,811.90 = 17,159.40 : x
  2. Step 2: Convert to fraction form
    35,879.40/53,811.90 = 17,159.40/x
  3. Step 3: Cross multiply
    35,879.40x = 53,811.90 × 17,159.40
  4. Step 4: Simplify right side
    35,879.40x = 923,379,916.86
  5. Step 5: Solve for x
    x = 923,379,916.86/35,879.40
  6. Step 6: Final answer
    x = 25,735.66

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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.