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Finding the Fourth Proportional to 13,496.08, 18,624.68 and 7,907.12

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Solution

The fourth proportional to 13,496.08, 18,624.68 and 7,907.12 is: 10,911.88

Step by Step Solution

  1. Step 1: Write the proportion equation
    13,496.08 : 18,624.68 = 7,907.12 : x
  2. Step 2: Convert to fraction form
    13,496.08/18,624.68 = 7,907.12/x
  3. Step 3: Cross multiply
    13,496.08x = 18,624.68 × 7,907.12
  4. Step 4: Simplify right side
    13,496.08x = 147,267,579.72
  5. Step 5: Solve for x
    x = 147,267,579.72/13,496.08
  6. Step 6: Final answer
    x = 10,911.88

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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.