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Finding the Fourth Proportional to 128,636.31, 192,951.68 and 44,393.64

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Solution

The fourth proportional to 128,636.31, 192,951.68 and 44,393.64 is: 66,589.50

Step by Step Solution

  1. Step 1: Write the proportion equation
    128,636.31 : 192,951.68 = 44,393.64 : x
  2. Step 2: Convert to fraction form
    128,636.31/192,951.68 = 44,393.64/x
  3. Step 3: Cross multiply
    128,636.31x = 192,951.68 × 44,393.64
  4. Step 4: Simplify right side
    128,636.31x = 8,565,827,197.35
  5. Step 5: Solve for x
    x = 8,565,827,197.35/128,636.31
  6. Step 6: Final answer
    x = 66,589.50

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1.5x scale

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.