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Finding the Fourth Proportional to 17,315.80, 25,973.70 and 10,720.60

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Solution

The fourth proportional to 17,315.80, 25,973.70 and 10,720.60 is: 16,080.90

Step by Step Solution

  1. Step 1: Write the proportion equation
    17,315.80 : 25,973.70 = 10,720.60 : x
  2. Step 2: Convert to fraction form
    17,315.80/25,973.70 = 10,720.60/x
  3. Step 3: Cross multiply
    17,315.80x = 25,973.70 × 10,720.60
  4. Step 4: Simplify right side
    17,315.80x = 278,453,648.22
  5. Step 5: Solve for x
    x = 278,453,648.22/17,315.80
  6. Step 6: Final answer
    x = 16,080.90

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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.