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Finding the Fourth Proportional to 691,416.56, 954,217.50 and 419,553.34

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Solution

The fourth proportional to 691,416.56, 954,217.50 and 419,553.34 is: 579,021.62

Step by Step Solution

  1. Step 1: Write the proportion equation
    691,416.56 : 954,217.50 = 419,553.34 : x
  2. Step 2: Convert to fraction form
    691,416.56/954,217.50 = 419,553.34/x
  3. Step 3: Cross multiply
    691,416.56x = 954,217.50 × 419,553.34
  4. Step 4: Simplify right side
    691,416.56x = 400,345,139,211.45
  5. Step 5: Solve for x
    x = 400,345,139,211.45/691,416.56
  6. Step 6: Final answer
    x = 579,021.62

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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.