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Finding the Fourth Proportional to 669,368.24, 923,635.24 and 393,738.60

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Solution

The fourth proportional to 669,368.24, 923,635.24 and 393,738.60 is: 543,304.61

Step by Step Solution

  1. Step 1: Write the proportion equation
    669,368.24 : 923,635.24 = 393,738.60 : x
  2. Step 2: Convert to fraction form
    669,368.24/923,635.24 = 393,738.60/x
  3. Step 3: Cross multiply
    669,368.24x = 923,635.24 × 393,738.60
  4. Step 4: Simplify right side
    669,368.24x = 363,670,848,787.55
  5. Step 5: Solve for x
    x = 363,670,848,787.55/669,368.24
  6. Step 6: Final answer
    x = 543,304.61

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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.