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Finding the Fourth Proportional to 157,366.95, 217,163.57 and 85,747.47

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Solution

The fourth proportional to 157,366.95, 217,163.57 and 85,747.47 is: 118,329.97

Step by Step Solution

  1. Step 1: Write the proportion equation
    157,366.95 : 217,163.57 = 85,747.47 : x
  2. Step 2: Convert to fraction form
    157,366.95/217,163.57 = 85,747.47/x
  3. Step 3: Cross multiply
    157,366.95x = 217,163.57 × 85,747.47
  4. Step 4: Simplify right side
    157,366.95x = 18,621,226,274.93
  5. Step 5: Solve for x
    x = 18,621,226,274.93/157,366.95
  6. Step 6: Final answer
    x = 118,329.97

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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.