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Finding the Fourth Proportional to 44,479.44, 66,728.88 and 13,312.24

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Solution

The fourth proportional to 44,479.44, 66,728.88 and 13,312.24 is: 19,971.27

Step by Step Solution

  1. Step 1: Write the proportion equation
    44,479.44 : 66,728.88 = 13,312.24 : x
  2. Step 2: Convert to fraction form
    44,479.44/66,728.88 = 13,312.24/x
  3. Step 3: Cross multiply
    44,479.44x = 66,728.88 × 13,312.24
  4. Step 4: Simplify right side
    44,479.44x = 888,310,865.49
  5. Step 5: Solve for x
    x = 888,310,865.49/44,479.44
  6. Step 6: Final answer
    x = 19,971.27

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1.5x scale

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.