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Finding the Fourth Proportional to 368,458.57, 552,784.44 and 115,728.85

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Solution

The fourth proportional to 368,458.57, 552,784.44 and 115,728.85 is: 173,623.61

Step by Step Solution

  1. Step 1: Write the proportion equation
    368,458.57 : 552,784.44 = 115,728.85 : x
  2. Step 2: Convert to fraction form
    368,458.57/552,784.44 = 115,728.85/x
  3. Step 3: Cross multiply
    368,458.57x = 552,784.44 × 115,728.85
  4. Step 4: Simplify right side
    368,458.57x = 63,973,107,539.09
  5. Step 5: Solve for x
    x = 63,973,107,539.09/368,458.57
  6. Step 6: Final answer
    x = 173,623.61

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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.