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Finding the Fourth Proportional to 9,935.63, 13,711.09 and 5,398.26

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Solution

The fourth proportional to 9,935.63, 13,711.09 and 5,398.26 is: 7,449.56

Step by Step Solution

  1. Step 1: Write the proportion equation
    9,935.63 : 13,711.09 = 5,398.26 : x
  2. Step 2: Convert to fraction form
    9,935.63/13,711.09 = 5,398.26/x
  3. Step 3: Cross multiply
    9,935.63x = 13,711.09 × 5,398.26
  4. Step 4: Simplify right side
    9,935.63x = 74,016,057.19
  5. Step 5: Solve for x
    x = 74,016,057.19/9,935.63
  6. Step 6: Final answer
    x = 7,449.56

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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.