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Finding the Fourth Proportional to 18,695.43, 28,042.79 and 4,844.07

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Solution

The fourth proportional to 18,695.43, 28,042.79 and 4,844.07 is: 7,266.01

Step by Step Solution

  1. Step 1: Write the proportion equation
    18,695.43 : 28,042.79 = 4,844.07 : x
  2. Step 2: Convert to fraction form
    18,695.43/28,042.79 = 4,844.07/x
  3. Step 3: Cross multiply
    18,695.43x = 28,042.79 × 4,844.07
  4. Step 4: Simplify right side
    18,695.43x = 135,841,213.53
  5. Step 5: Solve for x
    x = 135,841,213.53/18,695.43
  6. Step 6: Final answer
    x = 7,266.01

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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.