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Finding the Fourth Proportional to 696,859.77, 962,078.72 and 438,957.80

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Solution

The fourth proportional to 696,859.77, 962,078.72 and 438,957.80 is: 606,021.43

Step by Step Solution

  1. Step 1: Write the proportion equation
    696,859.77 : 962,078.72 = 438,957.80 : x
  2. Step 2: Convert to fraction form
    696,859.77/962,078.72 = 438,957.80/x
  3. Step 3: Cross multiply
    696,859.77x = 962,078.72 × 438,957.80
  4. Step 4: Simplify right side
    696,859.77x = 422,311,951,352.83
  5. Step 5: Solve for x
    x = 422,311,951,352.83/696,859.77
  6. Step 6: Final answer
    x = 606,021.43

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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.