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Finding the Fourth Proportional to 18,590.94, 27,894.51 and 8,729.46

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Solution

The fourth proportional to 18,590.94, 27,894.51 and 8,729.46 is: 13,097.99

Step by Step Solution

  1. Step 1: Write the proportion equation
    18,590.94 : 27,894.51 = 8,729.46 : x
  2. Step 2: Convert to fraction form
    18,590.94/27,894.51 = 8,729.46/x
  3. Step 3: Cross multiply
    18,590.94x = 27,894.51 × 8,729.46
  4. Step 4: Simplify right side
    18,590.94x = 243,504,009.26
  5. Step 5: Solve for x
    x = 243,504,009.26/18,590.94
  6. Step 6: Final answer
    x = 13,097.99

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1.5x scale

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.