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Finding the Fourth Proportional to 922,343.40, 1,383,515.10 and 764,879.40

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Solution

The fourth proportional to 922,343.40, 1,383,515.10 and 764,879.40 is: 1,147,319.10

Step by Step Solution

  1. Step 1: Write the proportion equation
    922,343.40 : 1,383,515.10 = 764,879.40 : x
  2. Step 2: Convert to fraction form
    922,343.40/1,383,515.10 = 764,879.40/x
  3. Step 3: Cross multiply
    922,343.40x = 1,383,515.10 × 764,879.40
  4. Step 4: Simplify right side
    922,343.40x = 1,058,222,199,578.94
  5. Step 5: Solve for x
    x = 1,058,222,199,578.94/922,343.40
  6. Step 6: Final answer
    x = 1,147,319.10

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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.