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Finding the Fourth Proportional to 18,725.92, 25,844.06 and 12,009.06

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Solution

The fourth proportional to 18,725.92, 25,844.06 and 12,009.06 is: 16,573.98

Step by Step Solution

  1. Step 1: Write the proportion equation
    18,725.92 : 25,844.06 = 12,009.06 : x
  2. Step 2: Convert to fraction form
    18,725.92/25,844.06 = 12,009.06/x
  3. Step 3: Cross multiply
    18,725.92x = 25,844.06 × 12,009.06
  4. Step 4: Simplify right side
    18,725.92x = 310,362,897.21
  5. Step 5: Solve for x
    x = 310,362,897.21/18,725.92
  6. Step 6: Final answer
    x = 16,573.98

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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.