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Finding the Fourth Proportional to 8,518.68, 11,755.80 and 4,792.68

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Solution

The fourth proportional to 8,518.68, 11,755.80 and 4,792.68 is: 6,613.91

Step by Step Solution

  1. Step 1: Write the proportion equation
    8,518.68 : 11,755.80 = 4,792.68 : x
  2. Step 2: Convert to fraction form
    8,518.68/11,755.80 = 4,792.68/x
  3. Step 3: Cross multiply
    8,518.68x = 11,755.80 × 4,792.68
  4. Step 4: Simplify right side
    8,518.68x = 56,341,787.54
  5. Step 5: Solve for x
    x = 56,341,787.54/8,518.68
  6. Step 6: Final answer
    x = 6,613.91

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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.