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Finding the Fourth Proportional to 7,374.58, 10,174.41 and 4,187.54

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Solution

The fourth proportional to 7,374.58, 10,174.41 and 4,187.54 is: 5,777.39

Step by Step Solution

  1. Step 1: Write the proportion equation
    7,374.58 : 10,174.41 = 4,187.54 : x
  2. Step 2: Convert to fraction form
    7,374.58/10,174.41 = 4,187.54/x
  3. Step 3: Cross multiply
    7,374.58x = 10,174.41 × 4,187.54
  4. Step 4: Simplify right side
    7,374.58x = 42,605,774.29
  5. Step 5: Solve for x
    x = 42,605,774.29/7,374.58
  6. Step 6: Final answer
    x = 5,777.39

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Half scale
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Double scale
Find fourth proportional to 7,375.58, 10,175.79 and 4,188.54
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.