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Finding the Fourth Proportional to 699,788.52, 965,800.74 and 393,924.12

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Solution

The fourth proportional to 699,788.52, 965,800.74 and 393,924.12 is: 543,667.40

Step by Step Solution

  1. Step 1: Write the proportion equation
    699,788.52 : 965,800.74 = 393,924.12 : x
  2. Step 2: Convert to fraction form
    699,788.52/965,800.74 = 393,924.12/x
  3. Step 3: Cross multiply
    699,788.52x = 965,800.74 × 393,924.12
  4. Step 4: Simplify right side
    699,788.52x = 380,452,206,599.85
  5. Step 5: Solve for x
    x = 380,452,206,599.85/699,788.52
  6. Step 6: Final answer
    x = 543,667.40

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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.