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Finding the Fourth Proportional to 664,076.80, 996,116.16 and 190,652.16

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Solution

The fourth proportional to 664,076.80, 996,116.16 and 190,652.16 is: 285,978.52

Step by Step Solution

  1. Step 1: Write the proportion equation
    664,076.80 : 996,116.16 = 190,652.16 : x
  2. Step 2: Convert to fraction form
    664,076.80/996,116.16 = 190,652.16/x
  3. Step 3: Cross multiply
    664,076.80x = 996,116.16 × 190,652.16
  4. Step 4: Simplify right side
    664,076.80x = 189,911,697,514.91
  5. Step 5: Solve for x
    x = 189,911,697,514.91/664,076.80
  6. Step 6: Final answer
    x = 285,978.52

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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.