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Finding the Fourth Proportional to 669,315.87, 923,388.80 and 427,535.73

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Solution

The fourth proportional to 669,315.87, 923,388.80 and 427,535.73 is: 589,828.69

Step by Step Solution

  1. Step 1: Write the proportion equation
    669,315.87 : 923,388.80 = 427,535.73 : x
  2. Step 2: Convert to fraction form
    669,315.87/923,388.80 = 427,535.73/x
  3. Step 3: Cross multiply
    669,315.87x = 923,388.80 × 427,535.73
  4. Step 4: Simplify right side
    669,315.87x = 394,781,702,544.15
  5. Step 5: Solve for x
    x = 394,781,702,544.15/669,315.87
  6. Step 6: Final answer
    x = 589,828.69

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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.