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Finding the Fourth Proportional to 9,765.99, 13,477.88 and 5,517.82

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Solution

The fourth proportional to 9,765.99, 13,477.88 and 5,517.82 is: 7,615.06

Step by Step Solution

  1. Step 1: Write the proportion equation
    9,765.99 : 13,477.88 = 5,517.82 : x
  2. Step 2: Convert to fraction form
    9,765.99/13,477.88 = 5,517.82/x
  3. Step 3: Cross multiply
    9,765.99x = 13,477.88 × 5,517.82
  4. Step 4: Simplify right side
    9,765.99x = 74,368,529.62
  5. Step 5: Solve for x
    x = 74,368,529.62/9,765.99
  6. Step 6: Final answer
    x = 7,615.06

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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.