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Finding the Fourth Proportional to 19,392.63, 26,758.91 and 10,893.12

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Solution

The fourth proportional to 19,392.63, 26,758.91 and 10,893.12 is: 15,030.87

Step by Step Solution

  1. Step 1: Write the proportion equation
    19,392.63 : 26,758.91 = 10,893.12 : x
  2. Step 2: Convert to fraction form
    19,392.63/26,758.91 = 10,893.12/x
  3. Step 3: Cross multiply
    19,392.63x = 26,758.91 × 10,893.12
  4. Step 4: Simplify right side
    19,392.63x = 291,488,017.70
  5. Step 5: Solve for x
    x = 291,488,017.70/19,392.63
  6. Step 6: Final answer
    x = 15,030.87

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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.