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Finding the Fourth Proportional to 13,496.64, 18,624 and 7,527.84

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Solution

The fourth proportional to 13,496.64, 18,624 and 7,527.84 is: 10,387.66

Step by Step Solution

  1. Step 1: Write the proportion equation
    13,496.64 : 18,624 = 7,527.84 : x
  2. Step 2: Convert to fraction form
    13,496.64/18,624 = 7,527.84/x
  3. Step 3: Cross multiply
    13,496.64x = 18,624 × 7,527.84
  4. Step 4: Simplify right side
    13,496.64x = 140,198,492.16
  5. Step 5: Solve for x
    x = 140,198,492.16/13,496.64
  6. Step 6: Final answer
    x = 10,387.66

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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.