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Finding the Fourth Proportional to 9,772.98, 13,486.73 and 5,739.03

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Solution

The fourth proportional to 9,772.98, 13,486.73 and 5,739.03 is: 7,919.87

Step by Step Solution

  1. Step 1: Write the proportion equation
    9,772.98 : 13,486.73 = 5,739.03 : x
  2. Step 2: Convert to fraction form
    9,772.98/13,486.73 = 5,739.03/x
  3. Step 3: Cross multiply
    9,772.98x = 13,486.73 × 5,739.03
  4. Step 4: Simplify right side
    9,772.98x = 77,400,748.07
  5. Step 5: Solve for x
    x = 77,400,748.07/9,772.98
  6. Step 6: Final answer
    x = 7,919.87

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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.