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Finding the Fourth Proportional to 14,230.84, 19,638.66 and 7,943.56

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Solution

The fourth proportional to 14,230.84, 19,638.66 and 7,943.56 is: 10,962.17

Step by Step Solution

  1. Step 1: Write the proportion equation
    14,230.84 : 19,638.66 = 7,943.56 : x
  2. Step 2: Convert to fraction form
    14,230.84/19,638.66 = 7,943.56/x
  3. Step 3: Cross multiply
    14,230.84x = 19,638.66 × 7,943.56
  4. Step 4: Simplify right side
    14,230.84x = 156,000,874.03
  5. Step 5: Solve for x
    x = 156,000,874.03/14,230.84
  6. Step 6: Final answer
    x = 10,962.17

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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.