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Finding the Fourth Proportional to 416,481.78, 623,890.25 and 191,533.95

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Solution

The fourth proportional to 416,481.78, 623,890.25 and 191,533.95 is: 286,918.10

Step by Step Solution

  1. Step 1: Write the proportion equation
    416,481.78 : 623,890.25 = 191,533.95 : x
  2. Step 2: Convert to fraction form
    416,481.78/623,890.25 = 191,533.95/x
  3. Step 3: Cross multiply
    416,481.78x = 623,890.25 × 191,533.95
  4. Step 4: Simplify right side
    416,481.78x = 119,496,163,709.57
  5. Step 5: Solve for x
    x = 119,496,163,709.57/416,481.78
  6. Step 6: Final answer
    x = 286,918.10

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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.