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Finding the Fourth Proportional to 8,111.63, 11,194.05 and 4,385.63

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Solution

The fourth proportional to 8,111.63, 11,194.05 and 4,385.63 is: 6,052.17

Step by Step Solution

  1. Step 1: Write the proportion equation
    8,111.63 : 11,194.05 = 4,385.63 : x
  2. Step 2: Convert to fraction form
    8,111.63/11,194.05 = 4,385.63/x
  3. Step 3: Cross multiply
    8,111.63x = 11,194.05 × 4,385.63
  4. Step 4: Simplify right side
    8,111.63x = 49,092,961.50
  5. Step 5: Solve for x
    x = 49,092,961.50/8,111.63
  6. Step 6: Final answer
    x = 6,052.17

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Half scale
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Double scale
Find fourth proportional to 8,112.63, 11,195.43 and 4,386.63
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.