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Finding the Fourth Proportional to 9,994.91, 13,792.92 and 5,518.63

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Solution

The fourth proportional to 9,994.91, 13,792.92 and 5,518.63 is: 7,615.67

Step by Step Solution

  1. Step 1: Write the proportion equation
    9,994.91 : 13,792.92 = 5,518.63 : x
  2. Step 2: Convert to fraction form
    9,994.91/13,792.92 = 5,518.63/x
  3. Step 3: Cross multiply
    9,994.91x = 13,792.92 × 5,518.63
  4. Step 4: Simplify right side
    9,994.91x = 76,117,987.62
  5. Step 5: Solve for x
    x = 76,117,987.62/9,994.91
  6. Step 6: Final answer
    x = 7,615.67

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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.