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Finding the Fourth Proportional to 30,191.40, 41,664.51 and 16,763.49

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Solution

The fourth proportional to 30,191.40, 41,664.51 and 16,763.49 is: 23,133.83

Step by Step Solution

  1. Step 1: Write the proportion equation
    30,191.40 : 41,664.51 = 16,763.49 : x
  2. Step 2: Convert to fraction form
    30,191.40/41,664.51 = 16,763.49/x
  3. Step 3: Cross multiply
    30,191.40x = 41,664.51 × 16,763.49
  4. Step 4: Simplify right side
    30,191.40x = 698,442,596.74
  5. Step 5: Solve for x
    x = 698,442,596.74/30,191.40
  6. Step 6: Final answer
    x = 23,133.83

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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.