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Finding the Fourth Proportional to 18,222.22, 25,143.78 and 10,262.89

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Solution

The fourth proportional to 18,222.22, 25,143.78 and 10,262.89 is: 14,161.16

Step by Step Solution

  1. Step 1: Write the proportion equation
    18,222.22 : 25,143.78 = 10,262.89 : x
  2. Step 2: Convert to fraction form
    18,222.22/25,143.78 = 10,262.89/x
  3. Step 3: Cross multiply
    18,222.22x = 25,143.78 × 10,262.89
  4. Step 4: Simplify right side
    18,222.22x = 258,047,848.32
  5. Step 5: Solve for x
    x = 258,047,848.32/18,222.22
  6. Step 6: Final answer
    x = 14,161.16

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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.