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Finding the Fourth Proportional to 719,517.91, 992,935.98 and 397,228.53

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Solution

The fourth proportional to 719,517.91, 992,935.98 and 397,228.53 is: 548,176.06

Step by Step Solution

  1. Step 1: Write the proportion equation
    719,517.91 : 992,935.98 = 397,228.53 : x
  2. Step 2: Convert to fraction form
    719,517.91/992,935.98 = 397,228.53/x
  3. Step 3: Cross multiply
    719,517.91x = 992,935.98 × 397,228.53
  4. Step 4: Simplify right side
    719,517.91x = 394,422,492,768.69
  5. Step 5: Solve for x
    x = 394,422,492,768.69/719,517.91
  6. Step 6: Final answer
    x = 548,176.06

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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.