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Finding the Fourth Proportional to 8,174.76, 11,281.26 and 4,448.76

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Solution

The fourth proportional to 8,174.76, 11,281.26 and 4,448.76 is: 6,139.34

Step by Step Solution

  1. Step 1: Write the proportion equation
    8,174.76 : 11,281.26 = 4,448.76 : x
  2. Step 2: Convert to fraction form
    8,174.76/11,281.26 = 4,448.76/x
  3. Step 3: Cross multiply
    8,174.76x = 11,281.26 × 4,448.76
  4. Step 4: Simplify right side
    8,174.76x = 50,187,618.24
  5. Step 5: Solve for x
    x = 50,187,618.24/8,174.76
  6. Step 6: Final answer
    x = 6,139.34

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Half scale
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Double scale
Find fourth proportional to 8,175.76, 11,282.64 and 4,449.76
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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.