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Finding the Fourth Proportional to 3,276.42, 4,914.90 and 936.45

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Solution

The fourth proportional to 3,276.42, 4,914.90 and 936.45 is: 1,404.75

Step by Step Solution

  1. Step 1: Write the proportion equation
    3,276.42 : 4,914.90 = 936.45 : x
  2. Step 2: Convert to fraction form
    3,276.42/4,914.90 = 936.45/x
  3. Step 3: Cross multiply
    3,276.42x = 4,914.90 × 936.45
  4. Step 4: Simplify right side
    3,276.42x = 4,602,558.11
  5. Step 5: Solve for x
    x = 4,602,558.11/3,276.42
  6. Step 6: Final answer
    x = 1,404.75

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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.