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Finding the Fourth Proportional to 61,166.40, 91,733.76 and 16,782.72

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Solution

The fourth proportional to 61,166.40, 91,733.76 and 16,782.72 is: 25,169.73

Step by Step Solution

  1. Step 1: Write the proportion equation
    61,166.40 : 91,733.76 = 16,782.72 : x
  2. Step 2: Convert to fraction form
    61,166.40/91,733.76 = 16,782.72/x
  3. Step 3: Cross multiply
    61,166.40x = 91,733.76 × 16,782.72
  4. Step 4: Simplify right side
    61,166.40x = 1,539,542,008.63
  5. Step 5: Solve for x
    x = 1,539,542,008.63/61,166.40
  6. Step 6: Final answer
    x = 25,169.73

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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.