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Finding the Fourth Proportional to 19,168.63, 28,607.19 and 17,899.63

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Solution

The fourth proportional to 19,168.63, 28,607.19 and 17,899.63 is: 26,713.34

Step by Step Solution

  1. Step 1: Write the proportion equation
    19,168.63 : 28,607.19 = 17,899.63 : x
  2. Step 2: Convert to fraction form
    19,168.63/28,607.19 = 17,899.63/x
  3. Step 3: Cross multiply
    19,168.63x = 28,607.19 × 17,899.63
  4. Step 4: Simplify right side
    19,168.63x = 512,057,977.70
  5. Step 5: Solve for x
    x = 512,057,977.70/19,168.63
  6. Step 6: Final answer
    x = 26,713.34

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1.5x scale

Why These Related Problems?

These problems maintain the same ratio (1.49) or explore similar proportional relationships. Practicing with related ratios helps build understanding of proportional relationships.