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Finding the Fourth Proportional to 118,563.93, 163,623.47 and 68,279.13

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Solution

The fourth proportional to 118,563.93, 163,623.47 and 68,279.13 is: 94,228.22

Step by Step Solution

  1. Step 1: Write the proportion equation
    118,563.93 : 163,623.47 = 68,279.13 : x
  2. Step 2: Convert to fraction form
    118,563.93/163,623.47 = 68,279.13/x
  3. Step 3: Cross multiply
    118,563.93x = 163,623.47 × 68,279.13
  4. Step 4: Simplify right side
    118,563.93x = 11,172,067,837.79
  5. Step 5: Solve for x
    x = 11,172,067,837.79/118,563.93
  6. Step 6: Final answer
    x = 94,228.22

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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.