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Finding the Fourth Proportional to 416,435.55, 574,674.20 and 225,447.39

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Solution

The fourth proportional to 416,435.55, 574,674.20 and 225,447.39 is: 311,113.68

Step by Step Solution

  1. Step 1: Write the proportion equation
    416,435.55 : 574,674.20 = 225,447.39 : x
  2. Step 2: Convert to fraction form
    416,435.55/574,674.20 = 225,447.39/x
  3. Step 3: Cross multiply
    416,435.55x = 574,674.20 × 225,447.39
  4. Step 4: Simplify right side
    416,435.55x = 129,558,797,363.10
  5. Step 5: Solve for x
    x = 129,558,797,363.10/416,435.55
  6. Step 6: Final answer
    x = 311,113.68

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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.