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Finding the Fourth Proportional to 66,845.75, 92,212.62 and 45,328.21

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Solution

The fourth proportional to 66,845.75, 92,212.62 and 45,328.21 is: 62,529.53

Step by Step Solution

  1. Step 1: Write the proportion equation
    66,845.75 : 92,212.62 = 45,328.21 : x
  2. Step 2: Convert to fraction form
    66,845.75/92,212.62 = 45,328.21/x
  3. Step 3: Cross multiply
    66,845.75x = 92,212.62 × 45,328.21
  4. Step 4: Simplify right side
    66,845.75x = 4,179,833,004.01
  5. Step 5: Solve for x
    x = 4,179,833,004.01/66,845.75
  6. Step 6: Final answer
    x = 62,529.53

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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.