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Finding the Fourth Proportional to 191,786.63, 287,633.75 and 58,668.03

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Solution

The fourth proportional to 191,786.63, 287,633.75 and 58,668.03 is: 87,987.91

Step by Step Solution

  1. Step 1: Write the proportion equation
    191,786.63 : 287,633.75 = 58,668.03 : x
  2. Step 2: Convert to fraction form
    191,786.63/287,633.75 = 58,668.03/x
  3. Step 3: Cross multiply
    191,786.63x = 287,633.75 × 58,668.03
  4. Step 4: Simplify right side
    191,786.63x = 16,874,905,180.67
  5. Step 5: Solve for x
    x = 16,874,905,180.67/191,786.63
  6. Step 6: Final answer
    x = 87,987.91

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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.