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Finding the Fourth Proportional to 207,704.45, 286,623.87 and 117,079.22

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Solution

The fourth proportional to 207,704.45, 286,623.87 and 117,079.22 is: 161,564.66

Step by Step Solution

  1. Step 1: Write the proportion equation
    207,704.45 : 286,623.87 = 117,079.22 : x
  2. Step 2: Convert to fraction form
    207,704.45/286,623.87 = 117,079.22/x
  3. Step 3: Cross multiply
    207,704.45x = 286,623.87 × 117,079.22
  4. Step 4: Simplify right side
    207,704.45x = 33,557,699,410.49
  5. Step 5: Solve for x
    x = 33,557,699,410.49/207,704.45
  6. Step 6: Final answer
    x = 161,564.66

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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.