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Finding the Fourth Proportional to 572,820.66, 790,388.28 and 331,014.60

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Solution

The fourth proportional to 572,820.66, 790,388.28 and 331,014.60 is: 456,739.92

Step by Step Solution

  1. Step 1: Write the proportion equation
    572,820.66 : 790,388.28 = 331,014.60 : x
  2. Step 2: Convert to fraction form
    572,820.66/790,388.28 = 331,014.60/x
  3. Step 3: Cross multiply
    572,820.66x = 790,388.28 × 331,014.60
  4. Step 4: Simplify right side
    572,820.66x = 261,630,060,348.89
  5. Step 5: Solve for x
    x = 261,630,060,348.89/572,820.66
  6. Step 6: Final answer
    x = 456,739.92

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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.