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Finding the Fourth Proportional to 13,597.76, 18,764.93 and 7,629.48

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Solution

The fourth proportional to 13,597.76, 18,764.93 and 7,629.48 is: 10,528.69

Step by Step Solution

  1. Step 1: Write the proportion equation
    13,597.76 : 18,764.93 = 7,629.48 : x
  2. Step 2: Convert to fraction form
    13,597.76/18,764.93 = 7,629.48/x
  3. Step 3: Cross multiply
    13,597.76x = 18,764.93 × 7,629.48
  4. Step 4: Simplify right side
    13,597.76x = 143,166,677.21
  5. Step 5: Solve for x
    x = 143,166,677.21/13,597.76
  6. Step 6: Final answer
    x = 10,528.69

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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.