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Finding the Fourth Proportional to 522,788.20, 783,708.06 and 190,129

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Solution

The fourth proportional to 522,788.20, 783,708.06 and 190,129 is: 285,021.03

Step by Step Solution

  1. Step 1: Write the proportion equation
    522,788.20 : 783,708.06 = 190,129 : x
  2. Step 2: Convert to fraction form
    522,788.20/783,708.06 = 190,129/x
  3. Step 3: Cross multiply
    522,788.20x = 783,708.06 × 190,129
  4. Step 4: Simplify right side
    522,788.20x = 149,005,629,739.74
  5. Step 5: Solve for x
    x = 149,005,629,739.74/522,788.20
  6. Step 6: Final answer
    x = 285,021.03

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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.