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Finding the Fourth Proportional to 61,643.88, 85,076.64 and 45,773.64

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Solution

The fourth proportional to 61,643.88, 85,076.64 and 45,773.64 is: 63,173.63

Step by Step Solution

  1. Step 1: Write the proportion equation
    61,643.88 : 85,076.64 = 45,773.64 : x
  2. Step 2: Convert to fraction form
    61,643.88/85,076.64 = 45,773.64/x
  3. Step 3: Cross multiply
    61,643.88x = 85,076.64 × 45,773.64
  4. Step 4: Simplify right side
    61,643.88x = 3,894,267,491.77
  5. Step 5: Solve for x
    x = 3,894,267,491.77/61,643.88
  6. Step 6: Final answer
    x = 63,173.63

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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.