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Finding the Fourth Proportional to 866,144.40, 1,297,661.40 and 741,728.40

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Solution

The fourth proportional to 866,144.40, 1,297,661.40 and 741,728.40 is: 1,111,260.79

Step by Step Solution

  1. Step 1: Write the proportion equation
    866,144.40 : 1,297,661.40 = 741,728.40 : x
  2. Step 2: Convert to fraction form
    866,144.40/1,297,661.40 = 741,728.40/x
  3. Step 3: Cross multiply
    866,144.40x = 1,297,661.40 × 741,728.40
  4. Step 4: Simplify right side
    866,144.40x = 962,512,313,963.76
  5. Step 5: Solve for x
    x = 962,512,313,963.76/866,144.40
  6. Step 6: Final answer
    x = 1,111,260.79

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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.