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Finding the Fourth Proportional to 13,803.84, 19,049.76 and 7,516.80

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Solution

The fourth proportional to 13,803.84, 19,049.76 and 7,516.80 is: 10,373.43

Step by Step Solution

  1. Step 1: Write the proportion equation
    13,803.84 : 19,049.76 = 7,516.80 : x
  2. Step 2: Convert to fraction form
    13,803.84/19,049.76 = 7,516.80/x
  3. Step 3: Cross multiply
    13,803.84x = 19,049.76 × 7,516.80
  4. Step 4: Simplify right side
    13,803.84x = 143,193,235.97
  5. Step 5: Solve for x
    x = 143,193,235.97/13,803.84
  6. Step 6: Final answer
    x = 10,373.43

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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.