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Finding the Fourth Proportional to 8,980.86, 12,392.74 and 5,204.17

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Solution

The fourth proportional to 8,980.86, 12,392.74 and 5,204.17 is: 7,181.26

Step by Step Solution

  1. Step 1: Write the proportion equation
    8,980.86 : 12,392.74 = 5,204.17 : x
  2. Step 2: Convert to fraction form
    8,980.86/12,392.74 = 5,204.17/x
  3. Step 3: Cross multiply
    8,980.86x = 12,392.74 × 5,204.17
  4. Step 4: Simplify right side
    8,980.86x = 64,493,863.76
  5. Step 5: Solve for x
    x = 64,493,863.76/8,980.86
  6. Step 6: Final answer
    x = 7,181.26

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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.