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Finding the Fourth Proportional to 28,981.22, 43,471.85 and 9,261.29

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Solution

The fourth proportional to 28,981.22, 43,471.85 and 9,261.29 is: 13,891.93

Step by Step Solution

  1. Step 1: Write the proportion equation
    28,981.22 : 43,471.85 = 9,261.29 : x
  2. Step 2: Convert to fraction form
    28,981.22/43,471.85 = 9,261.29/x
  3. Step 3: Cross multiply
    28,981.22x = 43,471.85 × 9,261.29
  4. Step 4: Simplify right side
    28,981.22x = 402,605,146.02
  5. Step 5: Solve for x
    x = 402,605,146.02/28,981.22
  6. Step 6: Final answer
    x = 13,891.93

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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.