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Finding the Fourth Proportional to 117,058.48, 161,541.66 and 68,689.32

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Solution

The fourth proportional to 117,058.48, 161,541.66 and 68,689.32 is: 94,791.82

Step by Step Solution

  1. Step 1: Write the proportion equation
    117,058.48 : 161,541.66 = 68,689.32 : x
  2. Step 2: Convert to fraction form
    117,058.48/161,541.66 = 68,689.32/x
  3. Step 3: Cross multiply
    117,058.48x = 161,541.66 × 68,689.32
  4. Step 4: Simplify right side
    117,058.48x = 11,096,186,777.07
  5. Step 5: Solve for x
    x = 11,096,186,777.07/117,058.48
  6. Step 6: Final answer
    x = 94,791.82

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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.