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Finding the Fourth Proportional to 644,173.17, 889,040.97 and 389,526.18

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Solution

The fourth proportional to 644,173.17, 889,040.97 and 389,526.18 is: 537,595.71

Step by Step Solution

  1. Step 1: Write the proportion equation
    644,173.17 : 889,040.97 = 389,526.18 : x
  2. Step 2: Convert to fraction form
    644,173.17/889,040.97 = 389,526.18/x
  3. Step 3: Cross multiply
    644,173.17x = 889,040.97 × 389,526.18
  4. Step 4: Simplify right side
    644,173.17x = 346,304,732,907.60
  5. Step 5: Solve for x
    x = 346,304,732,907.60/644,173.17
  6. Step 6: Final answer
    x = 537,595.71

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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.