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Finding the Fourth Proportional to 19,486.98, 26,893.62 and 11,527.92

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Solution

The fourth proportional to 19,486.98, 26,893.62 and 11,527.92 is: 15,909.47

Step by Step Solution

  1. Step 1: Write the proportion equation
    19,486.98 : 26,893.62 = 11,527.92 : x
  2. Step 2: Convert to fraction form
    19,486.98/26,893.62 = 11,527.92/x
  3. Step 3: Cross multiply
    19,486.98x = 26,893.62 × 11,527.92
  4. Step 4: Simplify right side
    19,486.98x = 310,027,499.87
  5. Step 5: Solve for x
    x = 310,027,499.87/19,486.98
  6. Step 6: Final answer
    x = 15,909.47

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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.