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Finding the Fourth Proportional to 19,494.63, 26,905.59 and 12,799.67

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Solution

The fourth proportional to 19,494.63, 26,905.59 and 12,799.67 is: 17,665.51

Step by Step Solution

  1. Step 1: Write the proportion equation
    19,494.63 : 26,905.59 = 12,799.67 : x
  2. Step 2: Convert to fraction form
    19,494.63/26,905.59 = 12,799.67/x
  3. Step 3: Cross multiply
    19,494.63x = 26,905.59 × 12,799.67
  4. Step 4: Simplify right side
    19,494.63x = 344,382,538.63
  5. Step 5: Solve for x
    x = 344,382,538.63/19,494.63
  6. Step 6: Final answer
    x = 17,665.51

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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.