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Finding the Fourth Proportional to 719,494.99, 992,877 and 397,198.17

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Solution

The fourth proportional to 719,494.99, 992,877 and 397,198.17 is: 548,119.07

Step by Step Solution

  1. Step 1: Write the proportion equation
    719,494.99 : 992,877 = 397,198.17 : x
  2. Step 2: Convert to fraction form
    719,494.99/992,877 = 397,198.17/x
  3. Step 3: Cross multiply
    719,494.99x = 992,877 × 397,198.17
  4. Step 4: Simplify right side
    719,494.99x = 394,368,927,435.09
  5. Step 5: Solve for x
    x = 394,368,927,435.09/719,494.99
  6. Step 6: Final answer
    x = 548,119.07

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Double scale
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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.