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Finding the Fourth Proportional to 207,786.51, 311,689.17 and 63,681.93

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Solution

The fourth proportional to 207,786.51, 311,689.17 and 63,681.93 is: 95,525.78

Step by Step Solution

  1. Step 1: Write the proportion equation
    207,786.51 : 311,689.17 = 63,681.93 : x
  2. Step 2: Convert to fraction form
    207,786.51/311,689.17 = 63,681.93/x
  3. Step 3: Cross multiply
    207,786.51x = 311,689.17 × 63,681.93
  4. Step 4: Simplify right side
    207,786.51x = 19,848,967,905.70
  5. Step 5: Solve for x
    x = 19,848,967,905.70/207,786.51
  6. Step 6: Final answer
    x = 95,525.78

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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.