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Finding the Fourth Proportional to 9,582.68, 13,224.12 and 5,391.20

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Solution

The fourth proportional to 9,582.68, 13,224.12 and 5,391.20 is: 7,439.87

Step by Step Solution

  1. Step 1: Write the proportion equation
    9,582.68 : 13,224.12 = 5,391.20 : x
  2. Step 2: Convert to fraction form
    9,582.68/13,224.12 = 5,391.20/x
  3. Step 3: Cross multiply
    9,582.68x = 13,224.12 × 5,391.20
  4. Step 4: Simplify right side
    9,582.68x = 71,293,875.74
  5. Step 5: Solve for x
    x = 71,293,875.74/9,582.68
  6. Step 6: Final answer
    x = 7,439.87

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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.