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Finding the Fourth Proportional to 61,754.88, 85,232.64 and 36,618.24

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Solution

The fourth proportional to 61,754.88, 85,232.64 and 36,618.24 is: 50,539.64

Step by Step Solution

  1. Step 1: Write the proportion equation
    61,754.88 : 85,232.64 = 36,618.24 : x
  2. Step 2: Convert to fraction form
    61,754.88/85,232.64 = 36,618.24/x
  3. Step 3: Cross multiply
    61,754.88x = 85,232.64 × 36,618.24
  4. Step 4: Simplify right side
    61,754.88x = 3,121,069,267.35
  5. Step 5: Solve for x
    x = 3,121,069,267.35/61,754.88
  6. Step 6: Final answer
    x = 50,539.64

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Why These Related Problems?

These problems maintain the same ratio (1.38) or explore similar proportional relationships. Practicing with related ratios helps build understanding of proportional relationships.