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Finding the Fourth Proportional to 6,608.77, 9,123.03 and 4,221.88

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Solution

The fourth proportional to 6,608.77, 9,123.03 and 4,221.88 is: 5,828.06

Step by Step Solution

  1. Step 1: Write the proportion equation
    6,608.77 : 9,123.03 = 4,221.88 : x
  2. Step 2: Convert to fraction form
    6,608.77/9,123.03 = 4,221.88/x
  3. Step 3: Cross multiply
    6,608.77x = 9,123.03 × 4,221.88
  4. Step 4: Simplify right side
    6,608.77x = 38,516,315.09
  5. Step 5: Solve for x
    x = 38,516,315.09/6,608.77
  6. Step 6: Final answer
    x = 5,828.06

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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.