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Finding the Fourth Proportional to 34,880.67, 48,135.20 and 18,965.79

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Solution

The fourth proportional to 34,880.67, 48,135.20 and 18,965.79 is: 26,172.72

Step by Step Solution

  1. Step 1: Write the proportion equation
    34,880.67 : 48,135.20 = 18,965.79 : x
  2. Step 2: Convert to fraction form
    34,880.67/48,135.20 = 18,965.79/x
  3. Step 3: Cross multiply
    34,880.67x = 48,135.20 × 18,965.79
  4. Step 4: Simplify right side
    34,880.67x = 912,921,999.98
  5. Step 5: Solve for x
    x = 912,921,999.98/34,880.67
  6. Step 6: Final answer
    x = 26,172.72

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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.