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Finding the Fourth Proportional to 8,361.80, 12,524.21 and 3,416.45

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Solution

The fourth proportional to 8,361.80, 12,524.21 and 3,416.45 is: 5,117.12

Step by Step Solution

  1. Step 1: Write the proportion equation
    8,361.80 : 12,524.21 = 3,416.45 : x
  2. Step 2: Convert to fraction form
    8,361.80/12,524.21 = 3,416.45/x
  3. Step 3: Cross multiply
    8,361.80x = 12,524.21 × 3,416.45
  4. Step 4: Simplify right side
    8,361.80x = 42,788,337.25
  5. Step 5: Solve for x
    x = 42,788,337.25/8,361.80
  6. Step 6: Final answer
    x = 5,117.12

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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.