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Finding the Fourth Proportional to 18,485.51, 25,512.65 and 10,528.48

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Solution

The fourth proportional to 18,485.51, 25,512.65 and 10,528.48 is: 14,530.81

Step by Step Solution

  1. Step 1: Write the proportion equation
    18,485.51 : 25,512.65 = 10,528.48 : x
  2. Step 2: Convert to fraction form
    18,485.51/25,512.65 = 10,528.48/x
  3. Step 3: Cross multiply
    18,485.51x = 25,512.65 × 10,528.48
  4. Step 4: Simplify right side
    18,485.51x = 268,609,425.27
  5. Step 5: Solve for x
    x = 268,609,425.27/18,485.51
  6. Step 6: Final answer
    x = 14,530.81

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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.