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Finding the Fourth Proportional to 626,236.71, 864,208.21 and 339,756.72

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Solution

The fourth proportional to 626,236.71, 864,208.21 and 339,756.72 is: 468,865.11

Step by Step Solution

  1. Step 1: Write the proportion equation
    626,236.71 : 864,208.21 = 339,756.72 : x
  2. Step 2: Convert to fraction form
    626,236.71/864,208.21 = 339,756.72/x
  3. Step 3: Cross multiply
    626,236.71x = 864,208.21 × 339,756.72
  4. Step 4: Simplify right side
    626,236.71x = 293,620,545,977.28
  5. Step 5: Solve for x
    x = 293,620,545,977.28/626,236.71
  6. Step 6: Final answer
    x = 468,865.11

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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.