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Finding the Fourth Proportional to 14,894.70, 20,554.54 and 8,180.43

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Solution

The fourth proportional to 14,894.70, 20,554.54 and 8,180.43 is: 11,288.91

Step by Step Solution

  1. Step 1: Write the proportion equation
    14,894.70 : 20,554.54 = 8,180.43 : x
  2. Step 2: Convert to fraction form
    14,894.70/20,554.54 = 8,180.43/x
  3. Step 3: Cross multiply
    14,894.70x = 20,554.54 × 8,180.43
  4. Step 4: Simplify right side
    14,894.70x = 168,144,975.65
  5. Step 5: Solve for x
    x = 168,144,975.65/14,894.70
  6. Step 6: Final answer
    x = 11,288.91

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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.