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Finding the Fourth Proportional to 1,968,664.38, 2,953,242.81 and 770,431.92

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Solution

The fourth proportional to 1,968,664.38, 2,953,242.81 and 770,431.92 is: 1,155,744.25

Step by Step Solution

  1. Step 1: Write the proportion equation
    1,968,664.38 : 2,953,242.81 = 770,431.92 : x
  2. Step 2: Convert to fraction form
    1,968,664.38/2,953,242.81 = 770,431.92/x
  3. Step 3: Cross multiply
    1,968,664.38x = 2,953,242.81 × 770,431.92
  4. Step 4: Simplify right side
    1,968,664.38x = 2,275,272,528,334.50
  5. Step 5: Solve for x
    x = 2,275,272,528,334.50/1,968,664.38
  6. Step 6: Final answer
    x = 1,155,744.25

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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.