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Finding the Fourth Proportional to 472,781.80, 709,172.70 and 367,028.20

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Solution

The fourth proportional to 472,781.80, 709,172.70 and 367,028.20 is: 550,542.30

Step by Step Solution

  1. Step 1: Write the proportion equation
    472,781.80 : 709,172.70 = 367,028.20 : x
  2. Step 2: Convert to fraction form
    472,781.80/709,172.70 = 367,028.20/x
  3. Step 3: Cross multiply
    472,781.80x = 709,172.70 × 367,028.20
  4. Step 4: Simplify right side
    472,781.80x = 260,286,379,570.14
  5. Step 5: Solve for x
    x = 260,286,379,570.14/472,781.80
  6. Step 6: Final answer
    x = 550,542.30

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Why These Related Problems?

These problems maintain the same ratio (1.50) or explore similar proportional relationships. Practicing with related ratios helps build understanding of proportional relationships.