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Finding the Fourth Proportional to 38,012.25, 52,458.53 and 21,245.25

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Solution

The fourth proportional to 38,012.25, 52,458.53 and 21,245.25 is: 29,319.35

Step by Step Solution

  1. Step 1: Write the proportion equation
    38,012.25 : 52,458.53 = 21,245.25 : x
  2. Step 2: Convert to fraction form
    38,012.25/52,458.53 = 21,245.25/x
  3. Step 3: Cross multiply
    38,012.25x = 52,458.53 × 21,245.25
  4. Step 4: Simplify right side
    38,012.25x = 1,114,494,478.26
  5. Step 5: Solve for x
    x = 1,114,494,478.26/38,012.25
  6. Step 6: Final answer
    x = 29,319.35

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Double scale
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Similar ratio
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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.