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Finding the Fourth Proportional to 18,897.00, 26,069.13 and 12,184.78

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Solution

The fourth proportional to 18,897.00, 26,069.13 and 12,184.78 is: 16,809.37

Step by Step Solution

  1. Step 1: Write the proportion equation
    18,897.00 : 26,069.13 = 12,184.78 : x
  2. Step 2: Convert to fraction form
    18,897.00/26,069.13 = 12,184.78/x
  3. Step 3: Cross multiply
    18,897.00x = 26,069.13 × 12,184.78
  4. Step 4: Simplify right side
    18,897.00x = 317,646,518.21
  5. Step 5: Solve for x
    x = 317,646,518.21/18,897.00
  6. Step 6: Final answer
    x = 16,809.37

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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.