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Finding the Fourth Proportional to 11,201.61, 15,455.74 and 6,483.16

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Solution

The fourth proportional to 11,201.61, 15,455.74 and 6,483.16 is: 8,945.32

Step by Step Solution

  1. Step 1: Write the proportion equation
    11,201.61 : 15,455.74 = 6,483.16 : x
  2. Step 2: Convert to fraction form
    11,201.61/15,455.74 = 6,483.16/x
  3. Step 3: Cross multiply
    11,201.61x = 15,455.74 × 6,483.16
  4. Step 4: Simplify right side
    11,201.61x = 100,202,035.34
  5. Step 5: Solve for x
    x = 100,202,035.34/11,201.61
  6. Step 6: Final answer
    x = 8,945.32

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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.