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Finding the Fourth Proportional to 19,102.20, 26,420.94 and 16,894.20

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Solution

The fourth proportional to 19,102.20, 26,420.94 and 16,894.20 is: 23,366.98

Step by Step Solution

  1. Step 1: Write the proportion equation
    19,102.20 : 26,420.94 = 16,894.20 : x
  2. Step 2: Convert to fraction form
    19,102.20/26,420.94 = 16,894.20/x
  3. Step 3: Cross multiply
    19,102.20x = 26,420.94 × 16,894.20
  4. Step 4: Simplify right side
    19,102.20x = 446,360,644.55
  5. Step 5: Solve for x
    x = 446,360,644.55/19,102.20
  6. Step 6: Final answer
    x = 23,366.98

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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.