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Finding the Fourth Proportional to 3,316.86, 4,974.60 and 976.32

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Solution

The fourth proportional to 3,316.86, 4,974.60 and 976.32 is: 1,464.28

Step by Step Solution

  1. Step 1: Write the proportion equation
    3,316.86 : 4,974.60 = 976.32 : x
  2. Step 2: Convert to fraction form
    3,316.86/4,974.60 = 976.32/x
  3. Step 3: Cross multiply
    3,316.86x = 4,974.60 × 976.32
  4. Step 4: Simplify right side
    3,316.86x = 4,856,801.47
  5. Step 5: Solve for x
    x = 4,856,801.47/3,316.86
  6. Step 6: Final answer
    x = 1,464.28

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1.5x scale

Why These Related Problems?

These problems maintain the same ratio (1.50) or explore similar proportional relationships. Practicing with related ratios helps build understanding of proportional relationships.