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Finding the Fourth Proportional to 9,811.18, 13,539.42 and 5,334.88

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Solution

The fourth proportional to 9,811.18, 13,539.42 and 5,334.88 is: 7,362.13

Step by Step Solution

  1. Step 1: Write the proportion equation
    9,811.18 : 13,539.42 = 5,334.88 : x
  2. Step 2: Convert to fraction form
    9,811.18/13,539.42 = 5,334.88/x
  3. Step 3: Cross multiply
    9,811.18x = 13,539.42 × 5,334.88
  4. Step 4: Simplify right side
    9,811.18x = 72,231,180.97
  5. Step 5: Solve for x
    x = 72,231,180.97/9,811.18
  6. Step 6: Final answer
    x = 7,362.13

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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.