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Finding the Fourth Proportional to 19,194.88, 28,770.48 and 11,681.87

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Solution

The fourth proportional to 19,194.88, 28,770.48 and 11,681.87 is: 17,509.51

Step by Step Solution

  1. Step 1: Write the proportion equation
    19,194.88 : 28,770.48 = 11,681.87 : x
  2. Step 2: Convert to fraction form
    19,194.88/28,770.48 = 11,681.87/x
  3. Step 3: Cross multiply
    19,194.88x = 28,770.48 × 11,681.87
  4. Step 4: Simplify right side
    19,194.88x = 336,092,863.35
  5. Step 5: Solve for x
    x = 336,092,863.35/19,194.88
  6. Step 6: Final answer
    x = 17,509.51

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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.