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Finding the Fourth Proportional to 38,348.99, 52,921.47 and 21,353.44

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Solution

The fourth proportional to 38,348.99, 52,921.47 and 21,353.44 is: 29,467.67

Step by Step Solution

  1. Step 1: Write the proportion equation
    38,348.99 : 52,921.47 = 21,353.44 : x
  2. Step 2: Convert to fraction form
    38,348.99/52,921.47 = 21,353.44/x
  3. Step 3: Cross multiply
    38,348.99x = 52,921.47 × 21,353.44
  4. Step 4: Simplify right side
    38,348.99x = 1,130,055,183.02
  5. Step 5: Solve for x
    x = 1,130,055,183.02/38,348.99
  6. Step 6: Final answer
    x = 29,467.67

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Double scale
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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.