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Finding the Fourth Proportional to 5,248.54, 7,242.42 and 2,890.54

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Solution

The fourth proportional to 5,248.54, 7,242.42 and 2,890.54 is: 3,988.63

Step by Step Solution

  1. Step 1: Write the proportion equation
    5,248.54 : 7,242.42 = 2,890.54 : x
  2. Step 2: Convert to fraction form
    5,248.54/7,242.42 = 2,890.54/x
  3. Step 3: Cross multiply
    5,248.54x = 7,242.42 × 2,890.54
  4. Step 4: Simplify right side
    5,248.54x = 20,934,504.71
  5. Step 5: Solve for x
    x = 20,934,504.71/5,248.54
  6. Step 6: Final answer
    x = 3,988.63

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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.