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Finding the Fourth Proportional to 326,563.90, 450,724.50 and 188,748.70

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Solution

The fourth proportional to 326,563.90, 450,724.50 and 188,748.70 is: 260,511.54

Step by Step Solution

  1. Step 1: Write the proportion equation
    326,563.90 : 450,724.50 = 188,748.70 : x
  2. Step 2: Convert to fraction form
    326,563.90/450,724.50 = 188,748.70/x
  3. Step 3: Cross multiply
    326,563.90x = 450,724.50 × 188,748.70
  4. Step 4: Simplify right side
    326,563.90x = 85,073,663,433.15
  5. Step 5: Solve for x
    x = 85,073,663,433.15/326,563.90
  6. Step 6: Final answer
    x = 260,511.54

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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.