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Finding the Fourth Proportional to 167,209.74, 230,734.17 and 99,215.01

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Solution

The fourth proportional to 167,209.74, 230,734.17 and 99,215.01 is: 136,907.65

Step by Step Solution

  1. Step 1: Write the proportion equation
    167,209.74 : 230,734.17 = 99,215.01 : x
  2. Step 2: Convert to fraction form
    167,209.74/230,734.17 = 99,215.01/x
  3. Step 3: Cross multiply
    167,209.74x = 230,734.17 × 99,215.01
  4. Step 4: Simplify right side
    167,209.74x = 22,892,292,983.89
  5. Step 5: Solve for x
    x = 22,892,292,983.89/167,209.74
  6. Step 6: Final answer
    x = 136,907.65

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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.