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Finding the Fourth Proportional to 30,672.40, 46,019.40 and 15,079.60

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Solution

The fourth proportional to 30,672.40, 46,019.40 and 15,079.60 is: 22,624.71

Step by Step Solution

  1. Step 1: Write the proportion equation
    30,672.40 : 46,019.40 = 15,079.60 : x
  2. Step 2: Convert to fraction form
    30,672.40/46,019.40 = 15,079.60/x
  3. Step 3: Cross multiply
    30,672.40x = 46,019.40 × 15,079.60
  4. Step 4: Simplify right side
    30,672.40x = 693,954,144.24
  5. Step 5: Solve for x
    x = 693,954,144.24/30,672.40
  6. Step 6: Final answer
    x = 22,624.71

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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.