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Finding the Fourth Proportional to 439,033.72, 658,419.90 and 186,310.12

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Solution

The fourth proportional to 439,033.72, 658,419.90 and 186,310.12 is: 279,409.72

Step by Step Solution

  1. Step 1: Write the proportion equation
    439,033.72 : 658,419.90 = 186,310.12 : x
  2. Step 2: Convert to fraction form
    439,033.72/658,419.90 = 186,310.12/x
  3. Step 3: Cross multiply
    439,033.72x = 658,419.90 × 186,310.12
  4. Step 4: Simplify right side
    439,033.72x = 122,670,290,579.39
  5. Step 5: Solve for x
    x = 122,670,290,579.39/439,033.72
  6. Step 6: Final answer
    x = 279,409.72

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1.5x scale

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.