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Finding the Fourth Proportional to 2,174.48, 3,261.72 and 875.96

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Solution

The fourth proportional to 2,174.48, 3,261.72 and 875.96 is: 1,313.94

Step by Step Solution

  1. Step 1: Write the proportion equation
    2,174.48 : 3,261.72 = 875.96 : x
  2. Step 2: Convert to fraction form
    2,174.48/3,261.72 = 875.96/x
  3. Step 3: Cross multiply
    2,174.48x = 3,261.72 × 875.96
  4. Step 4: Simplify right side
    2,174.48x = 2,857,136.25
  5. Step 5: Solve for x
    x = 2,857,136.25/2,174.48
  6. Step 6: Final answer
    x = 1,313.94

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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.