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Finding the Fourth Proportional to 206,744.64, 285,291.36 and 117,320.64

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Solution

The fourth proportional to 206,744.64, 285,291.36 and 117,320.64 is: 161,893.27

Step by Step Solution

  1. Step 1: Write the proportion equation
    206,744.64 : 285,291.36 = 117,320.64 : x
  2. Step 2: Convert to fraction form
    206,744.64/285,291.36 = 117,320.64/x
  3. Step 3: Cross multiply
    206,744.64x = 285,291.36 × 117,320.64
  4. Step 4: Simplify right side
    206,744.64x = 33,470,564,941.67
  5. Step 5: Solve for x
    x = 33,470,564,941.67/206,744.64
  6. Step 6: Final answer
    x = 161,893.27

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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.