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Finding the Fourth Proportional to 691,793.58, 954,634 and 401,382.64

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Solution

The fourth proportional to 691,793.58, 954,634 and 401,382.64 is: 553,884.17

Step by Step Solution

  1. Step 1: Write the proportion equation
    691,793.58 : 954,634 = 401,382.64 : x
  2. Step 2: Convert to fraction form
    691,793.58/954,634 = 401,382.64/x
  3. Step 3: Cross multiply
    691,793.58x = 954,634 × 401,382.64
  4. Step 4: Simplify right side
    691,793.58x = 383,173,515,153.76
  5. Step 5: Solve for x
    x = 383,173,515,153.76/691,793.58
  6. Step 6: Final answer
    x = 553,884.17

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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.