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Finding the Fourth Proportional to 572,879.39, 790,575.80 and 314,777.25

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Solution

The fourth proportional to 572,879.39, 790,575.80 and 314,777.25 is: 434,393.84

Step by Step Solution

  1. Step 1: Write the proportion equation
    572,879.39 : 790,575.80 = 314,777.25 : x
  2. Step 2: Convert to fraction form
    572,879.39/790,575.80 = 314,777.25/x
  3. Step 3: Cross multiply
    572,879.39x = 790,575.80 × 314,777.25
  4. Step 4: Simplify right side
    572,879.39x = 248,855,274,666.66
  5. Step 5: Solve for x
    x = 248,855,274,666.66/572,879.39
  6. Step 6: Final answer
    x = 434,393.84

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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.