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Finding the Fourth Proportional to 439,612.80, 658,900.80 and 186,892.80

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Solution

The fourth proportional to 439,612.80, 658,900.80 and 186,892.80 is: 280,118.81

Step by Step Solution

  1. Step 1: Write the proportion equation
    439,612.80 : 658,900.80 = 186,892.80 : x
  2. Step 2: Convert to fraction form
    439,612.80/658,900.80 = 186,892.80/x
  3. Step 3: Cross multiply
    439,612.80x = 658,900.80 × 186,892.80
  4. Step 4: Simplify right side
    439,612.80x = 123,143,815,434.24
  5. Step 5: Solve for x
    x = 123,143,815,434.24/439,612.80
  6. Step 6: Final answer
    x = 280,118.81

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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.