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Finding the Fourth Proportional to 44,356.81, 66,515.16 and 12,759.64

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Solution

The fourth proportional to 44,356.81, 66,515.16 and 12,759.64 is: 19,133.69

Step by Step Solution

  1. Step 1: Write the proportion equation
    44,356.81 : 66,515.16 = 12,759.64 : x
  2. Step 2: Convert to fraction form
    44,356.81/66,515.16 = 12,759.64/x
  3. Step 3: Cross multiply
    44,356.81x = 66,515.16 × 12,759.64
  4. Step 4: Simplify right side
    44,356.81x = 848,709,496.14
  5. Step 5: Solve for x
    x = 848,709,496.14/44,356.81
  6. Step 6: Final answer
    x = 19,133.69

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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.