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Finding the Fourth Proportional to 22,409.64, 30,926.04 and 12,338.82

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Solution

The fourth proportional to 22,409.64, 30,926.04 and 12,338.82 is: 17,027.98

Step by Step Solution

  1. Step 1: Write the proportion equation
    22,409.64 : 30,926.04 = 12,338.82 : x
  2. Step 2: Convert to fraction form
    22,409.64/30,926.04 = 12,338.82/x
  3. Step 3: Cross multiply
    22,409.64x = 30,926.04 × 12,338.82
  4. Step 4: Simplify right side
    22,409.64x = 381,590,840.87
  5. Step 5: Solve for x
    x = 381,590,840.87/22,409.64
  6. Step 6: Final answer
    x = 17,027.98

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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.