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Finding the Fourth Proportional to 17,689.70, 26,503.77 and 14,763.98

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Solution

The fourth proportional to 17,689.70, 26,503.77 and 14,763.98 is: 22,120.28

Step by Step Solution

  1. Step 1: Write the proportion equation
    17,689.70 : 26,503.77 = 14,763.98 : x
  2. Step 2: Convert to fraction form
    17,689.70/26,503.77 = 14,763.98/x
  3. Step 3: Cross multiply
    17,689.70x = 26,503.77 × 14,763.98
  4. Step 4: Simplify right side
    17,689.70x = 391,301,130.20
  5. Step 5: Solve for x
    x = 391,301,130.20/17,689.70
  6. Step 6: Final answer
    x = 22,120.28

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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.