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Finding the Fourth Proportional to 206,370.17, 309,555.66 and 56,612.51

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Solution

The fourth proportional to 206,370.17, 309,555.66 and 56,612.51 is: 84,918.88

Step by Step Solution

  1. Step 1: Write the proportion equation
    206,370.17 : 309,555.66 = 56,612.51 : x
  2. Step 2: Convert to fraction form
    206,370.17/309,555.66 = 56,612.51/x
  3. Step 3: Cross multiply
    206,370.17x = 309,555.66 × 56,612.51
  4. Step 4: Simplify right side
    206,370.17x = 17,524,722,897.31
  5. Step 5: Solve for x
    x = 17,524,722,897.31/206,370.17
  6. Step 6: Final answer
    x = 84,918.88

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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.