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Finding the Fourth Proportional to 31,408.40, 47,189.40 and 23,632.40

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Solution

The fourth proportional to 31,408.40, 47,189.40 and 23,632.40 is: 35,506.39

Step by Step Solution

  1. Step 1: Write the proportion equation
    31,408.40 : 47,189.40 = 23,632.40 : x
  2. Step 2: Convert to fraction form
    31,408.40/47,189.40 = 23,632.40/x
  3. Step 3: Cross multiply
    31,408.40x = 47,189.40 × 23,632.40
  4. Step 4: Simplify right side
    31,408.40x = 1,115,198,776.56
  5. Step 5: Solve for x
    x = 1,115,198,776.56/31,408.40
  6. Step 6: Final answer
    x = 35,506.39

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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.