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Finding the Fourth Proportional to 9,859.64, 13,606.20 and 5,383.38

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Solution

The fourth proportional to 9,859.64, 13,606.20 and 5,383.38 is: 7,429.01

Step by Step Solution

  1. Step 1: Write the proportion equation
    9,859.64 : 13,606.20 = 5,383.38 : x
  2. Step 2: Convert to fraction form
    9,859.64/13,606.20 = 5,383.38/x
  3. Step 3: Cross multiply
    9,859.64x = 13,606.20 × 5,383.38
  4. Step 4: Simplify right side
    9,859.64x = 73,247,344.96
  5. Step 5: Solve for x
    x = 73,247,344.96/9,859.64
  6. Step 6: Final answer
    x = 7,429.01

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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.