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Finding the Fourth Proportional to 179,712.80, 269,439.60 and 117,418.40

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Solution

The fourth proportional to 179,712.80, 269,439.60 and 117,418.40 is: 176,042.92

Step by Step Solution

  1. Step 1: Write the proportion equation
    179,712.80 : 269,439.60 = 117,418.40 : x
  2. Step 2: Convert to fraction form
    179,712.80/269,439.60 = 117,418.40/x
  3. Step 3: Cross multiply
    179,712.80x = 269,439.60 × 117,418.40
  4. Step 4: Simplify right side
    179,712.80x = 31,637,166,728.64
  5. Step 5: Solve for x
    x = 31,637,166,728.64/179,712.80
  6. Step 6: Final answer
    x = 176,042.92

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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.