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Finding the Fourth Proportional to 13,093.96, 18,069.84 and 7,125.76

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Solution

The fourth proportional to 13,093.96, 18,069.84 and 7,125.76 is: 9,833.64

Step by Step Solution

  1. Step 1: Write the proportion equation
    13,093.96 : 18,069.84 = 7,125.76 : x
  2. Step 2: Convert to fraction form
    13,093.96/18,069.84 = 7,125.76/x
  3. Step 3: Cross multiply
    13,093.96x = 18,069.84 × 7,125.76
  4. Step 4: Simplify right side
    13,093.96x = 128,761,343.08
  5. Step 5: Solve for x
    x = 128,761,343.08/13,093.96
  6. Step 6: Final answer
    x = 9,833.64

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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.