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Finding the Fourth Proportional to 117,195.77, 161,730.09 and 63,480.65

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Solution

The fourth proportional to 117,195.77, 161,730.09 and 63,480.65 is: 87,603.26

Step by Step Solution

  1. Step 1: Write the proportion equation
    117,195.77 : 161,730.09 = 63,480.65 : x
  2. Step 2: Convert to fraction form
    117,195.77/161,730.09 = 63,480.65/x
  3. Step 3: Cross multiply
    117,195.77x = 161,730.09 × 63,480.65
  4. Step 4: Simplify right side
    117,195.77x = 10,266,731,237.76
  5. Step 5: Solve for x
    x = 10,266,731,237.76/117,195.77
  6. Step 6: Final answer
    x = 87,603.26

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Why These Related Problems?

These problems maintain the same ratio (1.38) or explore similar proportional relationships. Practicing with related ratios helps build understanding of proportional relationships.