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Finding the Fourth Proportional to 8,858.51, 12,224.75 and 4,879.63

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Solution

The fourth proportional to 8,858.51, 12,224.75 and 4,879.63 is: 6,733.89

Step by Step Solution

  1. Step 1: Write the proportion equation
    8,858.51 : 12,224.75 = 4,879.63 : x
  2. Step 2: Convert to fraction form
    8,858.51/12,224.75 = 4,879.63/x
  3. Step 3: Cross multiply
    8,858.51x = 12,224.75 × 4,879.63
  4. Step 4: Simplify right side
    8,858.51x = 59,652,256.84
  5. Step 5: Solve for x
    x = 59,652,256.84/8,858.51
  6. Step 6: Final answer
    x = 6,733.89

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Half scale
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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.