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Finding the Fourth Proportional to 669,367.13, 923,633.69 and 393,737.49

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Solution

The fourth proportional to 669,367.13, 923,633.69 and 393,737.49 is: 543,303.06

Step by Step Solution

  1. Step 1: Write the proportion equation
    669,367.13 : 923,633.69 = 393,737.49 : x
  2. Step 2: Convert to fraction form
    669,367.13/923,633.69 = 393,737.49/x
  3. Step 3: Cross multiply
    669,367.13x = 923,633.69 × 393,737.49
  4. Step 4: Simplify right side
    669,367.13x = 363,669,208,811.35
  5. Step 5: Solve for x
    x = 363,669,208,811.35/669,367.13
  6. Step 6: Final answer
    x = 543,303.06

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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.