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Finding the Fourth Proportional to 403,273.20, 604,218.60 and 262,959.60

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Solution

The fourth proportional to 403,273.20, 604,218.60 and 262,959.60 is: 393,988.69

Step by Step Solution

  1. Step 1: Write the proportion equation
    403,273.20 : 604,218.60 = 262,959.60 : x
  2. Step 2: Convert to fraction form
    403,273.20/604,218.60 = 262,959.60/x
  3. Step 3: Cross multiply
    403,273.20x = 604,218.60 × 262,959.60
  4. Step 4: Simplify right side
    403,273.20x = 158,885,081,368.56
  5. Step 5: Solve for x
    x = 158,885,081,368.56/403,273.20
  6. Step 6: Final answer
    x = 393,988.69

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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.