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Finding the Fourth Proportional to 716,954.33, 989,396.69 and 394,662.75

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Solution

The fourth proportional to 716,954.33, 989,396.69 and 394,662.75 is: 544,634.44

Step by Step Solution

  1. Step 1: Write the proportion equation
    716,954.33 : 989,396.69 = 394,662.75 : x
  2. Step 2: Convert to fraction form
    716,954.33/989,396.69 = 394,662.75/x
  3. Step 3: Cross multiply
    716,954.33x = 989,396.69 × 394,662.75
  4. Step 4: Simplify right side
    716,954.33x = 390,478,016,542.98
  5. Step 5: Solve for x
    x = 390,478,016,542.98/716,954.33
  6. Step 6: Final answer
    x = 544,634.44

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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.