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Finding the Fourth Proportional to 11,555.14, 15,950.18 and 6,839.41

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Solution

The fourth proportional to 11,555.14, 15,950.18 and 6,839.41 is: 9,440.80

Step by Step Solution

  1. Step 1: Write the proportion equation
    11,555.14 : 15,950.18 = 6,839.41 : x
  2. Step 2: Convert to fraction form
    11,555.14/15,950.18 = 6,839.41/x
  3. Step 3: Cross multiply
    11,555.14x = 15,950.18 × 6,839.41
  4. Step 4: Simplify right side
    11,555.14x = 109,089,820.59
  5. Step 5: Solve for x
    x = 109,089,820.59/11,555.14
  6. Step 6: Final answer
    x = 9,440.80

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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.