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Finding the Fourth Proportional to 117,072.55, 161,560.41 and 63,357.96

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Solution

The fourth proportional to 117,072.55, 161,560.41 and 63,357.96 is: 87,434.14

Step by Step Solution

  1. Step 1: Write the proportion equation
    117,072.55 : 161,560.41 = 63,357.96 : x
  2. Step 2: Convert to fraction form
    117,072.55/161,560.41 = 63,357.96/x
  3. Step 3: Cross multiply
    117,072.55x = 161,560.41 × 63,357.96
  4. Step 4: Simplify right side
    117,072.55x = 10,236,137,994.36
  5. Step 5: Solve for x
    x = 10,236,137,994.36/117,072.55
  6. Step 6: Final answer
    x = 87,434.14

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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.