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Finding the Fourth Proportional to 18,476.70, 27,732.45 and 9,717.90

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Solution

The fourth proportional to 18,476.70, 27,732.45 and 9,717.90 is: 14,586.00

Step by Step Solution

  1. Step 1: Write the proportion equation
    18,476.70 : 27,732.45 = 9,717.90 : x
  2. Step 2: Convert to fraction form
    18,476.70/27,732.45 = 9,717.90/x
  3. Step 3: Cross multiply
    18,476.70x = 27,732.45 × 9,717.90
  4. Step 4: Simplify right side
    18,476.70x = 269,501,175.86
  5. Step 5: Solve for x
    x = 269,501,175.86/18,476.70
  6. Step 6: Final answer
    x = 14,586.00

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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.