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Finding the Fourth Proportional to 13,803.66, 20,706.84 and 4,443.84

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Solution

The fourth proportional to 13,803.66, 20,706.84 and 4,443.84 is: 6,666.19

Step by Step Solution

  1. Step 1: Write the proportion equation
    13,803.66 : 20,706.84 = 4,443.84 : x
  2. Step 2: Convert to fraction form
    13,803.66/20,706.84 = 4,443.84/x
  3. Step 3: Cross multiply
    13,803.66x = 20,706.84 × 4,443.84
  4. Step 4: Simplify right side
    13,803.66x = 92,017,883.87
  5. Step 5: Solve for x
    x = 92,017,883.87/13,803.66
  6. Step 6: Final answer
    x = 6,666.19

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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.