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Finding the Fourth Proportional to 133,859.75, 200,725.02 and 77,713.98

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Solution

The fourth proportional to 133,859.75, 200,725.02 and 77,713.98 is: 116,533.47

Step by Step Solution

  1. Step 1: Write the proportion equation
    133,859.75 : 200,725.02 = 77,713.98 : x
  2. Step 2: Convert to fraction form
    133,859.75/200,725.02 = 77,713.98/x
  3. Step 3: Cross multiply
    133,859.75x = 200,725.02 × 77,713.98
  4. Step 4: Simplify right side
    133,859.75x = 15,599,140,189.78
  5. Step 5: Solve for x
    x = 15,599,140,189.78/133,859.75
  6. Step 6: Final answer
    x = 116,533.47

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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.