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Finding the Fourth Proportional to 699,824.92, 965,756.01 and 393,901.12

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Solution

The fourth proportional to 699,824.92, 965,756.01 and 393,901.12 is: 543,582.21

Step by Step Solution

  1. Step 1: Write the proportion equation
    699,824.92 : 965,756.01 = 393,901.12 : x
  2. Step 2: Convert to fraction form
    699,824.92/965,756.01 = 393,901.12/x
  3. Step 3: Cross multiply
    699,824.92x = 965,756.01 × 393,901.12
  4. Step 4: Simplify right side
    699,824.92x = 380,412,373,985.73
  5. Step 5: Solve for x
    x = 380,412,373,985.73/699,824.92
  6. Step 6: Final answer
    x = 543,582.21

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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.