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Finding the Fourth Proportional to 625,919.94, 863,806.05 and 354,011.94

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Solution

The fourth proportional to 625,919.94, 863,806.05 and 354,011.94 is: 488,557.14

Step by Step Solution

  1. Step 1: Write the proportion equation
    625,919.94 : 863,806.05 = 354,011.94 : x
  2. Step 2: Convert to fraction form
    625,919.94/863,806.05 = 354,011.94/x
  3. Step 3: Cross multiply
    625,919.94x = 863,806.05 × 354,011.94
  4. Step 4: Simplify right side
    625,919.94x = 305,797,655,544.24
  5. Step 5: Solve for x
    x = 305,797,655,544.24/625,919.94
  6. Step 6: Final answer
    x = 488,557.14

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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.