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Finding the Fourth Proportional to 9,969.84, 13,758.21 and 5,493.60

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Solution

The fourth proportional to 9,969.84, 13,758.21 and 5,493.60 is: 7,581.07

Step by Step Solution

  1. Step 1: Write the proportion equation
    9,969.84 : 13,758.21 = 5,493.60 : x
  2. Step 2: Convert to fraction form
    9,969.84/13,758.21 = 5,493.60/x
  3. Step 3: Cross multiply
    9,969.84x = 13,758.21 × 5,493.60
  4. Step 4: Simplify right side
    9,969.84x = 75,582,102.46
  5. Step 5: Solve for x
    x = 75,582,102.46/9,969.84
  6. Step 6: Final answer
    x = 7,581.07

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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.