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Finding the Fourth Proportional to 38,683.98, 57,764.03 and 30,696.80

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Solution

The fourth proportional to 38,683.98, 57,764.03 and 30,696.80 is: 45,837.33

Step by Step Solution

  1. Step 1: Write the proportion equation
    38,683.98 : 57,764.03 = 30,696.80 : x
  2. Step 2: Convert to fraction form
    38,683.98/57,764.03 = 30,696.80/x
  3. Step 3: Cross multiply
    38,683.98x = 57,764.03 × 30,696.80
  4. Step 4: Simplify right side
    38,683.98x = 1,773,170,433.80
  5. Step 5: Solve for x
    x = 1,773,170,433.80/38,683.98
  6. Step 6: Final answer
    x = 45,837.33

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1.5x scale

Why These Related Problems?

These problems maintain the same ratio (1.49) or explore similar proportional relationships. Practicing with related ratios helps build understanding of proportional relationships.