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Finding the Fourth Proportional to 439,987.60, 659,384.42 and 186,950.80

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Solution

The fourth proportional to 439,987.60, 659,384.42 and 186,950.80 is: 280,172.54

Step by Step Solution

  1. Step 1: Write the proportion equation
    439,987.60 : 659,384.42 = 186,950.80 : x
  2. Step 2: Convert to fraction form
    439,987.60/659,384.42 = 186,950.80/x
  3. Step 3: Cross multiply
    439,987.60x = 659,384.42 × 186,950.80
  4. Step 4: Simplify right side
    439,987.60x = 123,272,444,826.54
  5. Step 5: Solve for x
    x = 123,272,444,826.54/439,987.60
  6. Step 6: Final answer
    x = 280,172.54

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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.