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Finding the Fourth Proportional to 9,396.87, 12,964.75 and 5,417.47

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Solution

The fourth proportional to 9,396.87, 12,964.75 and 5,417.47 is: 7,474.42

Step by Step Solution

  1. Step 1: Write the proportion equation
    9,396.87 : 12,964.75 = 5,417.47 : x
  2. Step 2: Convert to fraction form
    9,396.87/12,964.75 = 5,417.47/x
  3. Step 3: Cross multiply
    9,396.87x = 12,964.75 × 5,417.47
  4. Step 4: Simplify right side
    9,396.87x = 70,236,144.18
  5. Step 5: Solve for x
    x = 70,236,144.18/9,396.87
  6. Step 6: Final answer
    x = 7,474.42

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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.