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Finding the Fourth Proportional to 18,900.88, 26,069.88 and 16,048.68

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Solution

The fourth proportional to 18,900.88, 26,069.88 and 16,048.68 is: 22,135.86

Step by Step Solution

  1. Step 1: Write the proportion equation
    18,900.88 : 26,069.88 = 16,048.68 : x
  2. Step 2: Convert to fraction form
    18,900.88/26,069.88 = 16,048.68/x
  3. Step 3: Cross multiply
    18,900.88x = 26,069.88 × 16,048.68
  4. Step 4: Simplify right side
    18,900.88x = 418,387,161.76
  5. Step 5: Solve for x
    x = 418,387,161.76/18,900.88
  6. Step 6: Final answer
    x = 22,135.86

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1.5x scale

Why These Related Problems?

These problems maintain the same ratio (1.38) or explore similar proportional relationships. Practicing with related ratios helps build understanding of proportional relationships.