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Finding the Fourth Proportional to 663,603.72, 995,112.78 and 190,181.64

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Solution

The fourth proportional to 663,603.72, 995,112.78 and 190,181.64 is: 285,188.55

Step by Step Solution

  1. Step 1: Write the proportion equation
    663,603.72 : 995,112.78 = 190,181.64 : x
  2. Step 2: Convert to fraction form
    663,603.72/995,112.78 = 190,181.64/x
  3. Step 3: Cross multiply
    663,603.72x = 995,112.78 × 190,181.64
  4. Step 4: Simplify right side
    663,603.72x = 189,252,180,485.36
  5. Step 5: Solve for x
    x = 189,252,180,485.36/663,603.72
  6. Step 6: Final answer
    x = 285,188.55

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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.