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Finding the Fourth Proportional to 36,874.91, 55,312.26 and 9,172.91

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Solution

The fourth proportional to 36,874.91, 55,312.26 and 9,172.91 is: 13,759.34

Step by Step Solution

  1. Step 1: Write the proportion equation
    36,874.91 : 55,312.26 = 9,172.91 : x
  2. Step 2: Convert to fraction form
    36,874.91/55,312.26 = 9,172.91/x
  3. Step 3: Cross multiply
    36,874.91x = 55,312.26 × 9,172.91
  4. Step 4: Simplify right side
    36,874.91x = 507,374,382.88
  5. Step 5: Solve for x
    x = 507,374,382.88/36,874.91
  6. Step 6: Final answer
    x = 13,759.34

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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.