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Finding the Fourth Proportional to 66,999.10, 100,509.58 and 22,628.52

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Solution

The fourth proportional to 66,999.10, 100,509.58 and 22,628.52 is: 33,946.47

Step by Step Solution

  1. Step 1: Write the proportion equation
    66,999.10 : 100,509.58 = 22,628.52 : x
  2. Step 2: Convert to fraction form
    66,999.10/100,509.58 = 22,628.52/x
  3. Step 3: Cross multiply
    66,999.10x = 100,509.58 × 22,628.52
  4. Step 4: Simplify right side
    66,999.10x = 2,274,383,041.22
  5. Step 5: Solve for x
    x = 2,274,383,041.22/66,999.10
  6. Step 6: Final answer
    x = 33,946.47

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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.