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Finding the Fourth Proportional to 18,608.66, 25,686.70 and 12,323.06

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Solution

The fourth proportional to 18,608.66, 25,686.70 and 12,323.06 is: 17,010.29

Step by Step Solution

  1. Step 1: Write the proportion equation
    18,608.66 : 25,686.70 = 12,323.06 : x
  2. Step 2: Convert to fraction form
    18,608.66/25,686.70 = 12,323.06/x
  3. Step 3: Cross multiply
    18,608.66x = 25,686.70 × 12,323.06
  4. Step 4: Simplify right side
    18,608.66x = 316,538,745.30
  5. Step 5: Solve for x
    x = 316,538,745.30/18,608.66
  6. Step 6: Final answer
    x = 17,010.29

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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.