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Finding the Fourth Proportional to 622,197.65, 858,634.18 and 346,553.30

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Solution

The fourth proportional to 622,197.65, 858,634.18 and 346,553.30 is: 478,244.34

Step by Step Solution

  1. Step 1: Write the proportion equation
    622,197.65 : 858,634.18 = 346,553.30 : x
  2. Step 2: Convert to fraction form
    622,197.65/858,634.18 = 346,553.30/x
  3. Step 3: Cross multiply
    622,197.65x = 858,634.18 × 346,553.30
  4. Step 4: Simplify right side
    622,197.65x = 297,562,504,278.62
  5. Step 5: Solve for x
    x = 297,562,504,278.62/622,197.65
  6. Step 6: Final answer
    x = 478,244.34

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1.5x scale

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.