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Finding the Fourth Proportional to 118,472.36, 176,791.68 and 105,855.26

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Solution

The fourth proportional to 118,472.36, 176,791.68 and 105,855.26 is: 157,963.67

Step by Step Solution

  1. Step 1: Write the proportion equation
    118,472.36 : 176,791.68 = 105,855.26 : x
  2. Step 2: Convert to fraction form
    118,472.36/176,791.68 = 105,855.26/x
  3. Step 3: Cross multiply
    118,472.36x = 176,791.68 × 105,855.26
  4. Step 4: Simplify right side
    118,472.36x = 18,714,328,368.28
  5. Step 5: Solve for x
    x = 18,714,328,368.28/118,472.36
  6. Step 6: Final answer
    x = 157,963.67

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Why These Related Problems?

These problems maintain the same ratio (1.49) or explore similar proportional relationships. Practicing with related ratios helps build understanding of proportional relationships.