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Finding the Fourth Proportional to 18,806.51, 25,946.12 and 11,253.06

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Solution

The fourth proportional to 18,806.51, 25,946.12 and 11,253.06 is: 15,525.12

Step by Step Solution

  1. Step 1: Write the proportion equation
    18,806.51 : 25,946.12 = 11,253.06 : x
  2. Step 2: Convert to fraction form
    18,806.51/25,946.12 = 11,253.06/x
  3. Step 3: Cross multiply
    18,806.51x = 25,946.12 × 11,253.06
  4. Step 4: Simplify right side
    18,806.51x = 291,973,273.26
  5. Step 5: Solve for x
    x = 291,973,273.26/18,806.51
  6. Step 6: Final answer
    x = 15,525.12

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Double scale
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Similar ratio
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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.