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Finding the Fourth Proportional to 61,656.66, 92,485.72 and 21,676.82

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Solution

The fourth proportional to 61,656.66, 92,485.72 and 21,676.82 is: 32,515.48

Step by Step Solution

  1. Step 1: Write the proportion equation
    61,656.66 : 92,485.72 = 21,676.82 : x
  2. Step 2: Convert to fraction form
    61,656.66/92,485.72 = 21,676.82/x
  3. Step 3: Cross multiply
    61,656.66x = 92,485.72 × 21,676.82
  4. Step 4: Simplify right side
    61,656.66x = 2,004,795,747.75
  5. Step 5: Solve for x
    x = 2,004,795,747.75/61,656.66
  6. Step 6: Final answer
    x = 32,515.48

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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.