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Finding the Fourth Proportional to 18,655.94, 27,983.93 and 5,507.30

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Solution

The fourth proportional to 18,655.94, 27,983.93 and 5,507.30 is: 8,260.96

Step by Step Solution

  1. Step 1: Write the proportion equation
    18,655.94 : 27,983.93 = 5,507.30 : x
  2. Step 2: Convert to fraction form
    18,655.94/27,983.93 = 5,507.30/x
  3. Step 3: Cross multiply
    18,655.94x = 27,983.93 × 5,507.30
  4. Step 4: Simplify right side
    18,655.94x = 154,115,940.11
  5. Step 5: Solve for x
    x = 154,115,940.11/18,655.94
  6. Step 6: Final answer
    x = 8,260.96

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1.5x scale

Why These Related Problems?

These problems maintain the same ratio (1.50) or explore similar proportional relationships. Practicing with related ratios helps build understanding of proportional relationships.