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Finding the Fourth Proportional to 9,994.88, 13,792.87 and 5,518.91

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Solution

The fourth proportional to 9,994.88, 13,792.87 and 5,518.91 is: 7,616.06

Step by Step Solution

  1. Step 1: Write the proportion equation
    9,994.88 : 13,792.87 = 5,518.91 : x
  2. Step 2: Convert to fraction form
    9,994.88/13,792.87 = 5,518.91/x
  3. Step 3: Cross multiply
    9,994.88x = 13,792.87 × 5,518.91
  4. Step 4: Simplify right side
    9,994.88x = 76,121,608.17
  5. Step 5: Solve for x
    x = 76,121,608.17/9,994.88
  6. Step 6: Final answer
    x = 7,616.06

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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.