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Finding the Fourth Proportional to 66,702.72, 100,077.12 and 25,173.12

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Solution

The fourth proportional to 66,702.72, 100,077.12 and 25,173.12 is: 37,768.38

Step by Step Solution

  1. Step 1: Write the proportion equation
    66,702.72 : 100,077.12 = 25,173.12 : x
  2. Step 2: Convert to fraction form
    66,702.72/100,077.12 = 25,173.12/x
  3. Step 3: Cross multiply
    66,702.72x = 100,077.12 × 25,173.12
  4. Step 4: Simplify right side
    66,702.72x = 2,519,253,351.01
  5. Step 5: Solve for x
    x = 2,519,253,351.01/66,702.72
  6. Step 6: Final answer
    x = 37,768.38

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1.5x scale

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.