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Finding the Fourth Proportional to 13,601.81, 18,770.18 and 7,633.32

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Solution

The fourth proportional to 13,601.81, 18,770.18 and 7,633.32 is: 10,533.80

Step by Step Solution

  1. Step 1: Write the proportion equation
    13,601.81 : 18,770.18 = 7,633.32 : x
  2. Step 2: Convert to fraction form
    13,601.81/18,770.18 = 7,633.32/x
  3. Step 3: Cross multiply
    13,601.81x = 18,770.18 × 7,633.32
  4. Step 4: Simplify right side
    13,601.81x = 143,278,752.23
  5. Step 5: Solve for x
    x = 143,278,752.23/13,601.81
  6. Step 6: Final answer
    x = 10,533.80

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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.