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Finding the Fourth Proportional to 117,985.23, 176,909.49 and 80,590.49

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Solution

The fourth proportional to 117,985.23, 176,909.49 and 80,590.49 is: 120,839.04

Step by Step Solution

  1. Step 1: Write the proportion equation
    117,985.23 : 176,909.49 = 80,590.49 : x
  2. Step 2: Convert to fraction form
    117,985.23/176,909.49 = 80,590.49/x
  3. Step 3: Cross multiply
    117,985.23x = 176,909.49 × 80,590.49
  4. Step 4: Simplify right side
    117,985.23x = 14,257,222,484.75
  5. Step 5: Solve for x
    x = 14,257,222,484.75/117,985.23
  6. Step 6: Final answer
    x = 120,839.04

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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.