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Finding the Fourth Proportional to 3,571.65, 5,357.49 and 974.58

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Solution

The fourth proportional to 3,571.65, 5,357.49 and 974.58 is: 1,461.87

Step by Step Solution

  1. Step 1: Write the proportion equation
    3,571.65 : 5,357.49 = 974.58 : x
  2. Step 2: Convert to fraction form
    3,571.65/5,357.49 = 974.58/x
  3. Step 3: Cross multiply
    3,571.65x = 5,357.49 × 974.58
  4. Step 4: Simplify right side
    3,571.65x = 5,221,302.60
  5. Step 5: Solve for x
    x = 5,221,302.60/3,571.65
  6. Step 6: Final answer
    x = 1,461.87

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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.