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Finding the Fourth Proportional to 560,398.44, 773,318.16 and 318,739.80

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Solution

The fourth proportional to 560,398.44, 773,318.16 and 318,739.80 is: 439,842.90

Step by Step Solution

  1. Step 1: Write the proportion equation
    560,398.44 : 773,318.16 = 318,739.80 : x
  2. Step 2: Convert to fraction form
    560,398.44/773,318.16 = 318,739.80/x
  3. Step 3: Cross multiply
    560,398.44x = 773,318.16 × 318,739.80
  4. Step 4: Simplify right side
    560,398.44x = 246,487,275,654.77
  5. Step 5: Solve for x
    x = 246,487,275,654.77/560,398.44
  6. Step 6: Final answer
    x = 439,842.90

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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.