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Finding the Fourth Proportional to 35,891.64, 53,837.64 and 15,129.72

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Solution

The fourth proportional to 35,891.64, 53,837.64 and 15,129.72 is: 22,694.66

Step by Step Solution

  1. Step 1: Write the proportion equation
    35,891.64 : 53,837.64 = 15,129.72 : x
  2. Step 2: Convert to fraction form
    35,891.64/53,837.64 = 15,129.72/x
  3. Step 3: Cross multiply
    35,891.64x = 53,837.64 × 15,129.72
  4. Step 4: Simplify right side
    35,891.64x = 814,548,418.66
  5. Step 5: Solve for x
    x = 814,548,418.66/35,891.64
  6. Step 6: Final answer
    x = 22,694.66

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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.