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Finding the Fourth Proportional to 117,549.21, 162,227.96 and 66,570.95

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Solution

The fourth proportional to 117,549.21, 162,227.96 and 66,570.95 is: 91,873.60

Step by Step Solution

  1. Step 1: Write the proportion equation
    117,549.21 : 162,227.96 = 66,570.95 : x
  2. Step 2: Convert to fraction form
    117,549.21/162,227.96 = 66,570.95/x
  3. Step 3: Cross multiply
    117,549.21x = 162,227.96 × 66,570.95
  4. Step 4: Simplify right side
    117,549.21x = 10,799,669,413.76
  5. Step 5: Solve for x
    x = 10,799,669,413.76/117,549.21
  6. Step 6: Final answer
    x = 91,873.60

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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.