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Finding the Fourth Proportional to 206,686.79, 285,225.27 and 116,040.50

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Solution

The fourth proportional to 206,686.79, 285,225.27 and 116,040.50 is: 160,134.49

Step by Step Solution

  1. Step 1: Write the proportion equation
    206,686.79 : 285,225.27 = 116,040.50 : x
  2. Step 2: Convert to fraction form
    206,686.79/285,225.27 = 116,040.50/x
  3. Step 3: Cross multiply
    206,686.79x = 285,225.27 × 116,040.50
  4. Step 4: Simplify right side
    206,686.79x = 33,097,682,943.44
  5. Step 5: Solve for x
    x = 33,097,682,943.44/206,686.79
  6. Step 6: Final answer
    x = 160,134.49

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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.