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Finding the Fourth Proportional to 201,909.88, 278,625.66 and 117,054.52

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Solution

The fourth proportional to 201,909.88, 278,625.66 and 117,054.52 is: 161,529.46

Step by Step Solution

  1. Step 1: Write the proportion equation
    201,909.88 : 278,625.66 = 117,054.52 : x
  2. Step 2: Convert to fraction form
    201,909.88/278,625.66 = 117,054.52/x
  3. Step 3: Cross multiply
    201,909.88x = 278,625.66 × 117,054.52
  4. Step 4: Simplify right side
    201,909.88x = 32,614,392,890.98
  5. Step 5: Solve for x
    x = 32,614,392,890.98/201,909.88
  6. Step 6: Final answer
    x = 161,529.46

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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.