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Finding the Fourth Proportional to 485,127.80, 727,691.70 and 367,029.80

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Solution

The fourth proportional to 485,127.80, 727,691.70 and 367,029.80 is: 550,544.70

Step by Step Solution

  1. Step 1: Write the proportion equation
    485,127.80 : 727,691.70 = 367,029.80 : x
  2. Step 2: Convert to fraction form
    485,127.80/727,691.70 = 367,029.80/x
  3. Step 3: Cross multiply
    485,127.80x = 727,691.70 × 367,029.80
  4. Step 4: Simplify right side
    485,127.80x = 267,084,539,112.66
  5. Step 5: Solve for x
    x = 267,084,539,112.66/485,127.80
  6. Step 6: Final answer
    x = 550,544.70

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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.