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Finding the Fourth Proportional to 19,207.64, 26,511.56 and 12,511.64

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Solution

The fourth proportional to 19,207.64, 26,511.56 and 12,511.64 is: 17,269.33

Step by Step Solution

  1. Step 1: Write the proportion equation
    19,207.64 : 26,511.56 = 12,511.64 : x
  2. Step 2: Convert to fraction form
    19,207.64/26,511.56 = 12,511.64/x
  3. Step 3: Cross multiply
    19,207.64x = 26,511.56 × 12,511.64
  4. Step 4: Simplify right side
    19,207.64x = 331,702,899.44
  5. Step 5: Solve for x
    x = 331,702,899.44/19,207.64
  6. Step 6: Final answer
    x = 17,269.33

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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.