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Finding the Fourth Proportional to 92,874.68, 128,169.60 and 54,636.92

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Solution

The fourth proportional to 92,874.68, 128,169.60 and 54,636.92 is: 75,400.44

Step by Step Solution

  1. Step 1: Write the proportion equation
    92,874.68 : 128,169.60 = 54,636.92 : x
  2. Step 2: Convert to fraction form
    92,874.68/128,169.60 = 54,636.92/x
  3. Step 3: Cross multiply
    92,874.68x = 128,169.60 × 54,636.92
  4. Step 4: Simplify right side
    92,874.68x = 7,002,792,181.63
  5. Step 5: Solve for x
    x = 7,002,792,181.63/92,874.68
  6. Step 6: Final answer
    x = 75,400.44

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1.5x scale

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.