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Finding the Fourth Proportional to 644,333.65, 889,191.45 and 353,957.45

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Solution

The fourth proportional to 644,333.65, 889,191.45 and 353,957.45 is: 488,467.33

Step by Step Solution

  1. Step 1: Write the proportion equation
    644,333.65 : 889,191.45 = 353,957.45 : x
  2. Step 2: Convert to fraction form
    644,333.65/889,191.45 = 353,957.45/x
  3. Step 3: Cross multiply
    644,333.65x = 889,191.45 × 353,957.45
  4. Step 4: Simplify right side
    644,333.65x = 314,735,938,203.80
  5. Step 5: Solve for x
    x = 314,735,938,203.80/644,333.65
  6. Step 6: Final answer
    x = 488,467.33

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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.