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Finding the Fourth Proportional to 5,718.03, 7,890.75 and 3,328.43

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Solution

The fourth proportional to 5,718.03, 7,890.75 and 3,328.43 is: 4,593.15

Step by Step Solution

  1. Step 1: Write the proportion equation
    5,718.03 : 7,890.75 = 3,328.43 : x
  2. Step 2: Convert to fraction form
    5,718.03/7,890.75 = 3,328.43/x
  3. Step 3: Cross multiply
    5,718.03x = 7,890.75 × 3,328.43
  4. Step 4: Simplify right side
    5,718.03x = 26,263,769.57
  5. Step 5: Solve for x
    x = 26,263,769.57/5,718.03
  6. Step 6: Final answer
    x = 4,593.15

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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.