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Finding the Fourth Proportional to 391,253, 585,922.38 and 353,387.36

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Solution

The fourth proportional to 391,253, 585,922.38 and 353,387.36 is: 529,216.55

Step by Step Solution

  1. Step 1: Write the proportion equation
    391,253 : 585,922.38 = 353,387.36 : x
  2. Step 2: Convert to fraction form
    391,253/585,922.38 = 353,387.36/x
  3. Step 3: Cross multiply
    391,253x = 585,922.38 × 353,387.36
  4. Step 4: Simplify right side
    391,253x = 207,057,563,033.12
  5. Step 5: Solve for x
    x = 207,057,563,033.12/391,253
  6. Step 6: Final answer
    x = 529,216.55

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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.