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Finding the Fourth Proportional to 572,197.97, 789,386.50 and 345,712.25

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Solution

The fourth proportional to 572,197.97, 789,386.50 and 345,712.25 is: 476,933.85

Step by Step Solution

  1. Step 1: Write the proportion equation
    572,197.97 : 789,386.50 = 345,712.25 : x
  2. Step 2: Convert to fraction form
    572,197.97/789,386.50 = 345,712.25/x
  3. Step 3: Cross multiply
    572,197.97x = 789,386.50 × 345,712.25
  4. Step 4: Simplify right side
    572,197.97x = 272,900,583,034.63
  5. Step 5: Solve for x
    x = 272,900,583,034.63/572,197.97
  6. Step 6: Final answer
    x = 476,933.85

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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.