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Finding the Fourth Proportional to 417,027, 625,655.70 and 121,539

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Solution

The fourth proportional to 417,027, 625,655.70 and 121,539 is: 182,342.07

Step by Step Solution

  1. Step 1: Write the proportion equation
    417,027 : 625,655.70 = 121,539 : x
  2. Step 2: Convert to fraction form
    417,027/625,655.70 = 121,539/x
  3. Step 3: Cross multiply
    417,027x = 625,655.70 × 121,539
  4. Step 4: Simplify right side
    417,027x = 76,041,568,122.30
  5. Step 5: Solve for x
    x = 76,041,568,122.30/417,027
  6. Step 6: Final answer
    x = 182,342.07

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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.