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Finding the Fourth Proportional to 18,192.78, 25,105.98 and 10,235.00

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Solution

The fourth proportional to 18,192.78, 25,105.98 and 10,235.00 is: 14,124.26

Step by Step Solution

  1. Step 1: Write the proportion equation
    18,192.78 : 25,105.98 = 10,235.00 : x
  2. Step 2: Convert to fraction form
    18,192.78/25,105.98 = 10,235.00/x
  3. Step 3: Cross multiply
    18,192.78x = 25,105.98 × 10,235.00
  4. Step 4: Simplify right side
    18,192.78x = 256,959,579.77
  5. Step 5: Solve for x
    x = 256,959,579.77/18,192.78
  6. Step 6: Final answer
    x = 14,124.26

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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.