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Finding the Fourth Proportional to 66,783.76, 100,223.61 and 26,263.45

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Solution

The fourth proportional to 66,783.76, 100,223.61 and 26,263.45 is: 39,414.04

Step by Step Solution

  1. Step 1: Write the proportion equation
    66,783.76 : 100,223.61 = 26,263.45 : x
  2. Step 2: Convert to fraction form
    66,783.76/100,223.61 = 26,263.45/x
  3. Step 3: Cross multiply
    66,783.76x = 100,223.61 × 26,263.45
  4. Step 4: Simplify right side
    66,783.76x = 2,632,217,770.05
  5. Step 5: Solve for x
    x = 2,632,217,770.05/66,783.76
  6. Step 6: Final answer
    x = 39,414.04

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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.