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Finding the Fourth Proportional to 570,917.65, 856,390.38 and 191,843.88

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Solution

The fourth proportional to 570,917.65, 856,390.38 and 191,843.88 is: 287,770.49

Step by Step Solution

  1. Step 1: Write the proportion equation
    570,917.65 : 856,390.38 = 191,843.88 : x
  2. Step 2: Convert to fraction form
    570,917.65/856,390.38 = 191,843.88/x
  3. Step 3: Cross multiply
    570,917.65x = 856,390.38 × 191,843.88
  4. Step 4: Simplify right side
    570,917.65x = 164,293,253,293.87
  5. Step 5: Solve for x
    x = 164,293,253,293.87/570,917.65
  6. Step 6: Final answer
    x = 287,770.49

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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.