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Finding the Fourth Proportional to 511,389.01, 767,346.41 and 392,211.58

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Solution

The fourth proportional to 511,389.01, 767,346.41 and 392,211.58 is: 588,519.00

Step by Step Solution

  1. Step 1: Write the proportion equation
    511,389.01 : 767,346.41 = 392,211.58 : x
  2. Step 2: Convert to fraction form
    511,389.01/767,346.41 = 392,211.58/x
  3. Step 3: Cross multiply
    511,389.01x = 767,346.41 × 392,211.58
  4. Step 4: Simplify right side
    511,389.01x = 300,962,147,873.43
  5. Step 5: Solve for x
    x = 300,962,147,873.43/511,389.01
  6. Step 6: Final answer
    x = 588,519.00

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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.