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Finding the Fourth Proportional to 617,338.61, 851,554.33 and 407,787.79

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Solution

The fourth proportional to 617,338.61, 851,554.33 and 407,787.79 is: 562,500.79

Step by Step Solution

  1. Step 1: Write the proportion equation
    617,338.61 : 851,554.33 = 407,787.79 : x
  2. Step 2: Convert to fraction form
    617,338.61/851,554.33 = 407,787.79/x
  3. Step 3: Cross multiply
    617,338.61x = 851,554.33 × 407,787.79
  4. Step 4: Simplify right side
    617,338.61x = 347,253,458,295.63
  5. Step 5: Solve for x
    x = 347,253,458,295.63/617,338.61
  6. Step 6: Final answer
    x = 562,500.79

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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.