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Finding the Fourth Proportional to 393,552.06, 543,051.90 and 223,789.74

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Solution

The fourth proportional to 393,552.06, 543,051.90 and 223,789.74 is: 308,801.44

Step by Step Solution

  1. Step 1: Write the proportion equation
    393,552.06 : 543,051.90 = 223,789.74 : x
  2. Step 2: Convert to fraction form
    393,552.06/543,051.90 = 223,789.74/x
  3. Step 3: Cross multiply
    393,552.06x = 543,051.90 × 223,789.74
  4. Step 4: Simplify right side
    393,552.06x = 121,529,443,507.51
  5. Step 5: Solve for x
    x = 121,529,443,507.51/393,552.06
  6. Step 6: Final answer
    x = 308,801.44

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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.