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Finding the Fourth Proportional to 33,320.64, 49,964.40 and 11,126.40

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Solution

The fourth proportional to 33,320.64, 49,964.40 and 11,126.40 is: 16,684.07

Step by Step Solution

  1. Step 1: Write the proportion equation
    33,320.64 : 49,964.40 = 11,126.40 : x
  2. Step 2: Convert to fraction form
    33,320.64/49,964.40 = 11,126.40/x
  3. Step 3: Cross multiply
    33,320.64x = 49,964.40 × 11,126.40
  4. Step 4: Simplify right side
    33,320.64x = 555,923,900.16
  5. Step 5: Solve for x
    x = 555,923,900.16/33,320.64
  6. Step 6: Final answer
    x = 16,684.07

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Why These Related Problems?

These problems maintain the same ratio (1.50) or explore similar proportional relationships. Practicing with related ratios helps build understanding of proportional relationships.