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Finding the Fourth Proportional to 9,579.81, 13,218.16 and 5,600.15

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Solution

The fourth proportional to 9,579.81, 13,218.16 and 5,600.15 is: 7,727.05

Step by Step Solution

  1. Step 1: Write the proportion equation
    9,579.81 : 13,218.16 = 5,600.15 : x
  2. Step 2: Convert to fraction form
    9,579.81/13,218.16 = 5,600.15/x
  3. Step 3: Cross multiply
    9,579.81x = 13,218.16 × 5,600.15
  4. Step 4: Simplify right side
    9,579.81x = 74,023,650.72
  5. Step 5: Solve for x
    x = 74,023,650.72/9,579.81
  6. Step 6: Final answer
    x = 7,727.05

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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.