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Finding the Fourth Proportional to 356,998.64, 535,493.84 and 120,507.39

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Solution

The fourth proportional to 356,998.64, 535,493.84 and 120,507.39 is: 180,759.70

Step by Step Solution

  1. Step 1: Write the proportion equation
    356,998.64 : 535,493.84 = 120,507.39 : x
  2. Step 2: Convert to fraction form
    356,998.64/535,493.84 = 120,507.39/x
  3. Step 3: Cross multiply
    356,998.64x = 535,493.84 × 120,507.39
  4. Step 4: Simplify right side
    356,998.64x = 64,530,964,416.94
  5. Step 5: Solve for x
    x = 64,530,964,416.94/356,998.64
  6. Step 6: Final answer
    x = 180,759.70

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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.