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Finding the Fourth Proportional to 18,897.01, 26,069.15 and 12,184.79

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Solution

The fourth proportional to 18,897.01, 26,069.15 and 12,184.79 is: 16,809.39

Step by Step Solution

  1. Step 1: Write the proportion equation
    18,897.01 : 26,069.15 = 12,184.79 : x
  2. Step 2: Convert to fraction form
    18,897.01/26,069.15 = 12,184.79/x
  3. Step 3: Cross multiply
    18,897.01x = 26,069.15 × 12,184.79
  4. Step 4: Simplify right side
    18,897.01x = 317,647,204.03
  5. Step 5: Solve for x
    x = 317,647,204.03/18,897.01
  6. Step 6: Final answer
    x = 16,809.39

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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.