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Finding the Fourth Proportional to 61,643.03, 85,040.37 and 36,136.46

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Solution

The fourth proportional to 61,643.03, 85,040.37 and 36,136.46 is: 49,852.49

Step by Step Solution

  1. Step 1: Write the proportion equation
    61,643.03 : 85,040.37 = 36,136.46 : x
  2. Step 2: Convert to fraction form
    61,643.03/85,040.37 = 36,136.46/x
  3. Step 3: Cross multiply
    61,643.03x = 85,040.37 × 36,136.46
  4. Step 4: Simplify right side
    61,643.03x = 3,073,058,141.49
  5. Step 5: Solve for x
    x = 3,073,058,141.49/61,643.03
  6. Step 6: Final answer
    x = 49,852.49

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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.