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Finding the Fourth Proportional to 4,383.99, 6,544.73 and 4,230.21

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Solution

The fourth proportional to 4,383.99, 6,544.73 and 4,230.21 is: 6,315.16

Step by Step Solution

  1. Step 1: Write the proportion equation
    4,383.99 : 6,544.73 = 4,230.21 : x
  2. Step 2: Convert to fraction form
    4,383.99/6,544.73 = 4,230.21/x
  3. Step 3: Cross multiply
    4,383.99x = 6,544.73 × 4,230.21
  4. Step 4: Simplify right side
    4,383.99x = 27,685,582.29
  5. Step 5: Solve for x
    x = 27,685,582.29/4,383.99
  6. Step 6: Final answer
    x = 6,315.16

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Half scale
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Double scale
Find fourth proportional to 4,384.99, 6,546.22 and 4,231.21
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1.5x scale

Why These Related Problems?

These problems maintain the same ratio (1.49) or explore similar proportional relationships. Practicing with related ratios helps build understanding of proportional relationships.