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Finding the Fourth Proportional to 31,881.44, 47,812.44 and 8,504.84

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Solution

The fourth proportional to 31,881.44, 47,812.44 and 8,504.84 is: 12,754.67

Step by Step Solution

  1. Step 1: Write the proportion equation
    31,881.44 : 47,812.44 = 8,504.84 : x
  2. Step 2: Convert to fraction form
    31,881.44/47,812.44 = 8,504.84/x
  3. Step 3: Cross multiply
    31,881.44x = 47,812.44 × 8,504.84
  4. Step 4: Simplify right side
    31,881.44x = 406,637,152.21
  5. Step 5: Solve for x
    x = 406,637,152.21/31,881.44
  6. Step 6: Final answer
    x = 12,754.67

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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.