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Finding the Fourth Proportional to 612,668.08, 919,002.52 and 191,976.76

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Solution

The fourth proportional to 612,668.08, 919,002.52 and 191,976.76 is: 287,965.27

Step by Step Solution

  1. Step 1: Write the proportion equation
    612,668.08 : 919,002.52 = 191,976.76 : x
  2. Step 2: Convert to fraction form
    612,668.08/919,002.52 = 191,976.76/x
  3. Step 3: Cross multiply
    612,668.08x = 919,002.52 × 191,976.76
  4. Step 4: Simplify right side
    612,668.08x = 176,427,126,221.44
  5. Step 5: Solve for x
    x = 176,427,126,221.44/612,668.08
  6. Step 6: Final answer
    x = 287,965.27

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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.