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Finding the Fourth Proportional to 19,381.60, 29,007.60 and 17,048.80

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Solution

The fourth proportional to 19,381.60, 29,007.60 and 17,048.80 is: 25,516.20

Step by Step Solution

  1. Step 1: Write the proportion equation
    19,381.60 : 29,007.60 = 17,048.80 : x
  2. Step 2: Convert to fraction form
    19,381.60/29,007.60 = 17,048.80/x
  3. Step 3: Cross multiply
    19,381.60x = 29,007.60 × 17,048.80
  4. Step 4: Simplify right side
    19,381.60x = 494,544,770.88
  5. Step 5: Solve for x
    x = 494,544,770.88/19,381.60
  6. Step 6: Final answer
    x = 25,516.20

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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.