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Finding the Fourth Proportional to 9,642.64, 14,463.96 and 3,486.64

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Solution

The fourth proportional to 9,642.64, 14,463.96 and 3,486.64 is: 5,229.96

Step by Step Solution

  1. Step 1: Write the proportion equation
    9,642.64 : 14,463.96 = 3,486.64 : x
  2. Step 2: Convert to fraction form
    9,642.64/14,463.96 = 3,486.64/x
  3. Step 3: Cross multiply
    9,642.64x = 14,463.96 × 3,486.64
  4. Step 4: Simplify right side
    9,642.64x = 50,430,621.49
  5. Step 5: Solve for x
    x = 50,430,621.49/9,642.64
  6. Step 6: Final answer
    x = 5,229.96

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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.