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Finding the Fourth Proportional to 14,043.84, 19,381.72 and 7,757.44

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Solution

The fourth proportional to 14,043.84, 19,381.72 and 7,757.44 is: 10,705.94

Step by Step Solution

  1. Step 1: Write the proportion equation
    14,043.84 : 19,381.72 = 7,757.44 : x
  2. Step 2: Convert to fraction form
    14,043.84/19,381.72 = 7,757.44/x
  3. Step 3: Cross multiply
    14,043.84x = 19,381.72 × 7,757.44
  4. Step 4: Simplify right side
    14,043.84x = 150,352,530.00
  5. Step 5: Solve for x
    x = 150,352,530.00/14,043.84
  6. Step 6: Final answer
    x = 10,705.94

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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.