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Finding the Fourth Proportional to 491,453.26, 677,945.37 and 338,225.43

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Solution

The fourth proportional to 491,453.26, 677,945.37 and 338,225.43 is: 466,572.07

Step by Step Solution

  1. Step 1: Write the proportion equation
    491,453.26 : 677,945.37 = 338,225.43 : x
  2. Step 2: Convert to fraction form
    491,453.26/677,945.37 = 338,225.43/x
  3. Step 3: Cross multiply
    491,453.26x = 677,945.37 × 338,225.43
  4. Step 4: Simplify right side
    491,453.26x = 229,298,364,284.76
  5. Step 5: Solve for x
    x = 229,298,364,284.76/491,453.26
  6. Step 6: Final answer
    x = 466,572.07

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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.