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Finding the Fourth Proportional to 386,193.60, 580,845.60 and 345,758.40

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Solution

The fourth proportional to 386,193.60, 580,845.60 and 345,758.40 is: 520,029.97

Step by Step Solution

  1. Step 1: Write the proportion equation
    386,193.60 : 580,845.60 = 345,758.40 : x
  2. Step 2: Convert to fraction form
    386,193.60/580,845.60 = 345,758.40/x
  3. Step 3: Cross multiply
    386,193.60x = 580,845.60 × 345,758.40
  4. Step 4: Simplify right side
    386,193.60x = 200,832,245,303.04
  5. Step 5: Solve for x
    x = 200,832,245,303.04/386,193.60
  6. Step 6: Final answer
    x = 520,029.97

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1.5x scale

Why These Related Problems?

These problems maintain the same ratio (1.50) or explore similar proportional relationships. Practicing with related ratios helps build understanding of proportional relationships.