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Finding the Fourth Proportional to 136,055.56, 187,691.34 and 117,159.88

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Solution

The fourth proportional to 136,055.56, 187,691.34 and 117,159.88 is: 161,624.38

Step by Step Solution

  1. Step 1: Write the proportion equation
    136,055.56 : 187,691.34 = 117,159.88 : x
  2. Step 2: Convert to fraction form
    136,055.56/187,691.34 = 117,159.88/x
  3. Step 3: Cross multiply
    136,055.56x = 187,691.34 × 117,159.88
  4. Step 4: Simplify right side
    136,055.56x = 21,989,894,871.44
  5. Step 5: Solve for x
    x = 21,989,894,871.44/136,055.56
  6. Step 6: Final answer
    x = 161,624.38

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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.