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Finding the Fourth Proportional to 17,203.40, 25,805.10 and 12,829.40

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Solution

The fourth proportional to 17,203.40, 25,805.10 and 12,829.40 is: 19,244.10

Step by Step Solution

  1. Step 1: Write the proportion equation
    17,203.40 : 25,805.10 = 12,829.40 : x
  2. Step 2: Convert to fraction form
    17,203.40/25,805.10 = 12,829.40/x
  3. Step 3: Cross multiply
    17,203.40x = 25,805.10 × 12,829.40
  4. Step 4: Simplify right side
    17,203.40x = 331,063,949.94
  5. Step 5: Solve for x
    x = 331,063,949.94/17,203.40
  6. Step 6: Final answer
    x = 19,244.10

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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.