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Finding the Fourth Proportional to 66,803.70, 100,169.10 and 22,407.60

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Solution

The fourth proportional to 66,803.70, 100,169.10 and 22,407.60 is: 33,599.17

Step by Step Solution

  1. Step 1: Write the proportion equation
    66,803.70 : 100,169.10 = 22,407.60 : x
  2. Step 2: Convert to fraction form
    66,803.70/100,169.10 = 22,407.60/x
  3. Step 3: Cross multiply
    66,803.70x = 100,169.10 × 22,407.60
  4. Step 4: Simplify right side
    66,803.70x = 2,244,549,125.16
  5. Step 5: Solve for x
    x = 2,244,549,125.16/66,803.70
  6. Step 6: Final answer
    x = 33,599.17

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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.