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Finding the Fourth Proportional to 855,978.12, 1,181,248.74 and 474,004.44

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Solution

The fourth proportional to 855,978.12, 1,181,248.74 and 474,004.44 is: 654,125.54

Step by Step Solution

  1. Step 1: Write the proportion equation
    855,978.12 : 1,181,248.74 = 474,004.44 : x
  2. Step 2: Convert to fraction form
    855,978.12/1,181,248.74 = 474,004.44/x
  3. Step 3: Cross multiply
    855,978.12x = 1,181,248.74 × 474,004.44
  4. Step 4: Simplify right side
    855,978.12x = 559,917,147,504.41
  5. Step 5: Solve for x
    x = 559,917,147,504.41/855,978.12
  6. Step 6: Final answer
    x = 654,125.54

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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.