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Finding the Fourth Proportional to 633,441.36, 874,236.05 and 388,382.77

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Solution

The fourth proportional to 633,441.36, 874,236.05 and 388,382.77 is: 536,021.55

Step by Step Solution

  1. Step 1: Write the proportion equation
    633,441.36 : 874,236.05 = 388,382.77 : x
  2. Step 2: Convert to fraction form
    633,441.36/874,236.05 = 388,382.77/x
  3. Step 3: Cross multiply
    633,441.36x = 874,236.05 × 388,382.77
  4. Step 4: Simplify right side
    633,441.36x = 339,538,218,732.86
  5. Step 5: Solve for x
    x = 339,538,218,732.86/633,441.36
  6. Step 6: Final answer
    x = 536,021.55

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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.