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Finding the Fourth Proportional to 19,367.80, 26,695.62 and 13,695.22

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Solution

The fourth proportional to 19,367.80, 26,695.62 and 13,695.22 is: 18,876.82

Step by Step Solution

  1. Step 1: Write the proportion equation
    19,367.80 : 26,695.62 = 13,695.22 : x
  2. Step 2: Convert to fraction form
    19,367.80/26,695.62 = 13,695.22/x
  3. Step 3: Cross multiply
    19,367.80x = 26,695.62 × 13,695.22
  4. Step 4: Simplify right side
    19,367.80x = 365,602,388.94
  5. Step 5: Solve for x
    x = 365,602,388.94/19,367.80
  6. Step 6: Final answer
    x = 18,876.82

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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.