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Finding the Fourth Proportional to 7,321.92, 10,983.55 and 2,391.58

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Solution

The fourth proportional to 7,321.92, 10,983.55 and 2,391.58 is: 3,587.59

Step by Step Solution

  1. Step 1: Write the proportion equation
    7,321.92 : 10,983.55 = 2,391.58 : x
  2. Step 2: Convert to fraction form
    7,321.92/10,983.55 = 2,391.58/x
  3. Step 3: Cross multiply
    7,321.92x = 10,983.55 × 2,391.58
  4. Step 4: Simplify right side
    7,321.92x = 26,268,038.51
  5. Step 5: Solve for x
    x = 26,268,038.51/7,321.92
  6. Step 6: Final answer
    x = 3,587.59

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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.