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Finding the Fourth Proportional to 716,850.39, 989,245.72 and 394,553.57

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Solution

The fourth proportional to 716,850.39, 989,245.72 and 394,553.57 is: 544,479.62

Step by Step Solution

  1. Step 1: Write the proportion equation
    716,850.39 : 989,245.72 = 394,553.57 : x
  2. Step 2: Convert to fraction form
    716,850.39/989,245.72 = 394,553.57/x
  3. Step 3: Cross multiply
    716,850.39x = 989,245.72 × 394,553.57
  4. Step 4: Simplify right side
    716,850.39x = 390,310,430,433.22
  5. Step 5: Solve for x
    x = 390,310,430,433.22/716,850.39
  6. Step 6: Final answer
    x = 544,479.62

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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.