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Finding the Fourth Proportional to 719,261.28, 992,578.53 and 396,969.07

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Solution

The fourth proportional to 719,261.28, 992,578.53 and 396,969.07 is: 547,816.19

Step by Step Solution

  1. Step 1: Write the proportion equation
    719,261.28 : 992,578.53 = 396,969.07 : x
  2. Step 2: Convert to fraction form
    719,261.28/992,578.53 = 396,969.07/x
  3. Step 3: Cross multiply
    719,261.28x = 992,578.53 × 396,969.07
  4. Step 4: Simplify right side
    719,261.28x = 394,022,975,956.07
  5. Step 5: Solve for x
    x = 394,022,975,956.07/719,261.28
  6. Step 6: Final answer
    x = 547,816.19

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1.5x scale

Why These Related Problems?

These problems maintain the same ratio (1.38) or explore similar proportional relationships. Practicing with related ratios helps build understanding of proportional relationships.