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Finding the Fourth Proportional to 18,908.66, 28,367.22 and 5,762.06

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Solution

The fourth proportional to 18,908.66, 28,367.22 and 5,762.06 is: 8,644.38

Step by Step Solution

  1. Step 1: Write the proportion equation
    18,908.66 : 28,367.22 = 5,762.06 : x
  2. Step 2: Convert to fraction form
    18,908.66/28,367.22 = 5,762.06/x
  3. Step 3: Cross multiply
    18,908.66x = 28,367.22 × 5,762.06
  4. Step 4: Simplify right side
    18,908.66x = 163,453,623.67
  5. Step 5: Solve for x
    x = 163,453,623.67/18,908.66
  6. Step 6: Final answer
    x = 8,644.38

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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.