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Finding the Fourth Proportional to 922,376.40, 1,383,564.60 and 764,912.40

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Solution

The fourth proportional to 922,376.40, 1,383,564.60 and 764,912.40 is: 1,147,368.60

Step by Step Solution

  1. Step 1: Write the proportion equation
    922,376.40 : 1,383,564.60 = 764,912.40 : x
  2. Step 2: Convert to fraction form
    922,376.40/1,383,564.60 = 764,912.40/x
  3. Step 3: Cross multiply
    922,376.40x = 1,383,564.60 × 764,912.40
  4. Step 4: Simplify right side
    922,376.40x = 1,058,305,718,741.04
  5. Step 5: Solve for x
    x = 1,058,305,718,741.04/922,376.40
  6. Step 6: Final answer
    x = 1,147,368.60

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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.