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Finding the Fourth Proportional to 9,701.56, 13,388.16 and 5,509.81

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Solution

The fourth proportional to 9,701.56, 13,388.16 and 5,509.81 is: 7,603.54

Step by Step Solution

  1. Step 1: Write the proportion equation
    9,701.56 : 13,388.16 = 5,509.81 : x
  2. Step 2: Convert to fraction form
    9,701.56/13,388.16 = 5,509.81/x
  3. Step 3: Cross multiply
    9,701.56x = 13,388.16 × 5,509.81
  4. Step 4: Simplify right side
    9,701.56x = 73,766,217.85
  5. Step 5: Solve for x
    x = 73,766,217.85/9,701.56
  6. Step 6: Final answer
    x = 7,603.54

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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.