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Finding the Fourth Proportional to 639,565.64, 959,181.28 and 190,165.48

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Solution

The fourth proportional to 639,565.64, 959,181.28 and 190,165.48 is: 285,198.51

Step by Step Solution

  1. Step 1: Write the proportion equation
    639,565.64 : 959,181.28 = 190,165.48 : x
  2. Step 2: Convert to fraction form
    639,565.64/959,181.28 = 190,165.48/x
  3. Step 3: Cross multiply
    639,565.64x = 959,181.28 × 190,165.48
  4. Step 4: Simplify right side
    639,565.64x = 182,403,168,518.21
  5. Step 5: Solve for x
    x = 182,403,168,518.21/639,565.64
  6. Step 6: Final answer
    x = 285,198.51

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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.