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Finding the Fourth Proportional to 416,385.86, 624,485.39 and 191,530.35

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Solution

The fourth proportional to 416,385.86, 624,485.39 and 191,530.35 is: 287,252.56

Step by Step Solution

  1. Step 1: Write the proportion equation
    416,385.86 : 624,485.39 = 191,530.35 : x
  2. Step 2: Convert to fraction form
    416,385.86/624,485.39 = 191,530.35/x
  3. Step 3: Cross multiply
    416,385.86x = 624,485.39 × 191,530.35
  4. Step 4: Simplify right side
    416,385.86x = 119,607,904,358.94
  5. Step 5: Solve for x
    x = 119,607,904,358.94/416,385.86
  6. Step 6: Final answer
    x = 287,252.56

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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.