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Finding the Fourth Proportional to 17,907.88, 26,840.92 and 13,157.16

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Solution

The fourth proportional to 17,907.88, 26,840.92 and 13,157.16 is: 19,720.38

Step by Step Solution

  1. Step 1: Write the proportion equation
    17,907.88 : 26,840.92 = 13,157.16 : x
  2. Step 2: Convert to fraction form
    17,907.88/26,840.92 = 13,157.16/x
  3. Step 3: Cross multiply
    17,907.88x = 26,840.92 × 13,157.16
  4. Step 4: Simplify right side
    17,907.88x = 353,150,278.99
  5. Step 5: Solve for x
    x = 353,150,278.99/17,907.88
  6. Step 6: Final answer
    x = 19,720.38

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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.