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Finding the Fourth Proportional to 356,405.32, 534,687.78 and 119,741.56

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Solution

The fourth proportional to 356,405.32, 534,687.78 and 119,741.56 is: 179,639.15

Step by Step Solution

  1. Step 1: Write the proportion equation
    356,405.32 : 534,687.78 = 119,741.56 : x
  2. Step 2: Convert to fraction form
    356,405.32/534,687.78 = 119,741.56/x
  3. Step 3: Cross multiply
    356,405.32x = 534,687.78 × 119,741.56
  4. Step 4: Simplify right side
    356,405.32x = 64,024,348,890.14
  5. Step 5: Solve for x
    x = 64,024,348,890.14/356,405.32
  6. Step 6: Final answer
    x = 179,639.15

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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.