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Finding the Fourth Proportional to 478,840.23, 718,471.92 and 251,081.46

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Solution

The fourth proportional to 478,840.23, 718,471.92 and 251,081.46 is: 376,733.13

Step by Step Solution

  1. Step 1: Write the proportion equation
    478,840.23 : 718,471.92 = 251,081.46 : x
  2. Step 2: Convert to fraction form
    478,840.23/718,471.92 = 251,081.46/x
  3. Step 3: Cross multiply
    478,840.23x = 718,471.92 × 251,081.46
  4. Step 4: Simplify right side
    478,840.23x = 180,394,978,642.60
  5. Step 5: Solve for x
    x = 180,394,978,642.60/478,840.23
  6. Step 6: Final answer
    x = 376,733.13

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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.