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Finding the Fourth Proportional to 210,790.88, 316,163.03 and 53,019.39

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Solution

The fourth proportional to 210,790.88, 316,163.03 and 53,019.39 is: 79,523.23

Step by Step Solution

  1. Step 1: Write the proportion equation
    210,790.88 : 316,163.03 = 53,019.39 : x
  2. Step 2: Convert to fraction form
    210,790.88/316,163.03 = 53,019.39/x
  3. Step 3: Cross multiply
    210,790.88x = 316,163.03 × 53,019.39
  4. Step 4: Simplify right side
    210,790.88x = 16,762,770,726.05
  5. Step 5: Solve for x
    x = 16,762,770,726.05/210,790.88
  6. Step 6: Final answer
    x = 79,523.23

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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.