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Finding the Fourth Proportional to 316,778.80, 437,154.72 and 189,454.39

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Solution

The fourth proportional to 316,778.80, 437,154.72 and 189,454.39 is: 261,447.04

Step by Step Solution

  1. Step 1: Write the proportion equation
    316,778.80 : 437,154.72 = 189,454.39 : x
  2. Step 2: Convert to fraction form
    316,778.80/437,154.72 = 189,454.39/x
  3. Step 3: Cross multiply
    316,778.80x = 437,154.72 × 189,454.39
  4. Step 4: Simplify right side
    316,778.80x = 82,820,880,813.22
  5. Step 5: Solve for x
    x = 82,820,880,813.22/316,778.80
  6. Step 6: Final answer
    x = 261,447.04

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These problems maintain the same ratio (1.38) or explore similar proportional relationships. Practicing with related ratios helps build understanding of proportional relationships.