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Finding the Fourth Proportional to 38,745.72, 53,455.34 and 25,324.72

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Solution

The fourth proportional to 38,745.72, 53,455.34 and 25,324.72 is: 34,939.13

Step by Step Solution

  1. Step 1: Write the proportion equation
    38,745.72 : 53,455.34 = 25,324.72 : x
  2. Step 2: Convert to fraction form
    38,745.72/53,455.34 = 25,324.72/x
  3. Step 3: Cross multiply
    38,745.72x = 53,455.34 × 25,324.72
  4. Step 4: Simplify right side
    38,745.72x = 1,353,741,748.36
  5. Step 5: Solve for x
    x = 1,353,741,748.36/38,745.72
  6. Step 6: Final answer
    x = 34,939.13

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Double scale
Find fourth proportional to 38,746.72, 53,456.72 and 25,325.72
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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.