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Finding the Fourth Proportional to 118,943.34, 164,141.64 and 68,642.34

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Solution

The fourth proportional to 118,943.34, 164,141.64 and 68,642.34 is: 94,726.33

Step by Step Solution

  1. Step 1: Write the proportion equation
    118,943.34 : 164,141.64 = 68,642.34 : x
  2. Step 2: Convert to fraction form
    118,943.34/164,141.64 = 68,642.34/x
  3. Step 3: Cross multiply
    118,943.34x = 164,141.64 × 68,642.34
  4. Step 4: Simplify right side
    118,943.34x = 11,267,066,261.04
  5. Step 5: Solve for x
    x = 11,267,066,261.04/118,943.34
  6. Step 6: Final answer
    x = 94,726.33

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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.