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Finding the Fourth Proportional to 45,861.90, 68,799.26 and 14,274.28

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Solution

The fourth proportional to 45,861.90, 68,799.26 and 14,274.28 is: 21,413.41

Step by Step Solution

  1. Step 1: Write the proportion equation
    45,861.90 : 68,799.26 = 14,274.28 : x
  2. Step 2: Convert to fraction form
    45,861.90/68,799.26 = 14,274.28/x
  3. Step 3: Cross multiply
    45,861.90x = 68,799.26 × 14,274.28
  4. Step 4: Simplify right side
    45,861.90x = 982,059,615.65
  5. Step 5: Solve for x
    x = 982,059,615.65/45,861.90
  6. Step 6: Final answer
    x = 21,413.41

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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.