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Finding the Fourth Proportional to 210,561.96, 315,796.40 and 60,769.66

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Solution

The fourth proportional to 210,561.96, 315,796.40 and 60,769.66 is: 91,141.06

Step by Step Solution

  1. Step 1: Write the proportion equation
    210,561.96 : 315,796.40 = 60,769.66 : x
  2. Step 2: Convert to fraction form
    210,561.96/315,796.40 = 60,769.66/x
  3. Step 3: Cross multiply
    210,561.96x = 315,796.40 × 60,769.66
  4. Step 4: Simplify right side
    210,561.96x = 19,190,839,857.22
  5. Step 5: Solve for x
    x = 19,190,839,857.22/210,561.96
  6. Step 6: Final answer
    x = 91,141.06

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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.