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Finding the Fourth Proportional to 326,723.20, 458,345.60 and 326,723.20

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Solution

The fourth proportional to 326,723.20, 458,345.60 and 326,723.20 is: 458,345.60

Step by Step Solution

  1. Step 1: Write the proportion equation
    326,723.20 : 458,345.60 = 326,723.20 : x
  2. Step 2: Convert to fraction form
    326,723.20/458,345.60 = 326,723.20/x
  3. Step 3: Cross multiply
    326,723.20x = 458,345.60 × 326,723.20
  4. Step 4: Simplify right side
    326,723.20x = 149,752,141,137.92
  5. Step 5: Solve for x
    x = 149,752,141,137.92/326,723.20
  6. Step 6: Final answer
    x = 458,345.60

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1.5x scale

Why These Related Problems?

These problems maintain the same ratio (1.40) or explore similar proportional relationships. Practicing with related ratios helps build understanding of proportional relationships.