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Finding the Fourth Proportional to 691,652.86, 954,336.58 and 419,863.84

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Solution

The fourth proportional to 691,652.86, 954,336.58 and 419,863.84 is: 579,324.46

Step by Step Solution

  1. Step 1: Write the proportion equation
    691,652.86 : 954,336.58 = 419,863.84 : x
  2. Step 2: Convert to fraction form
    691,652.86/954,336.58 = 419,863.84/x
  3. Step 3: Cross multiply
    691,652.86x = 954,336.58 × 419,863.84
  4. Step 4: Simplify right side
    691,652.86x = 400,691,421,131.27
  5. Step 5: Solve for x
    x = 400,691,421,131.27/691,652.86
  6. Step 6: Final answer
    x = 579,324.46

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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.