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Finding the Fourth Proportional to 669,065.34, 922,890.24 and 396,940.62

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Solution

The fourth proportional to 669,065.34, 922,890.24 and 396,940.62 is: 547,528.92

Step by Step Solution

  1. Step 1: Write the proportion equation
    669,065.34 : 922,890.24 = 396,940.62 : x
  2. Step 2: Convert to fraction form
    669,065.34/922,890.24 = 396,940.62/x
  3. Step 3: Cross multiply
    669,065.34x = 922,890.24 × 396,940.62
  4. Step 4: Simplify right side
    669,065.34x = 366,332,624,057.55
  5. Step 5: Solve for x
    x = 366,332,624,057.55/669,065.34
  6. Step 6: Final answer
    x = 547,528.92

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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.