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Finding the Fourth Proportional to 189,560.88, 261,651.93 and 116,985.96

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Solution

The fourth proportional to 189,560.88, 261,651.93 and 116,985.96 is: 161,476.37

Step by Step Solution

  1. Step 1: Write the proportion equation
    189,560.88 : 261,651.93 = 116,985.96 : x
  2. Step 2: Convert to fraction form
    189,560.88/261,651.93 = 116,985.96/x
  3. Step 3: Cross multiply
    189,560.88x = 261,651.93 × 116,985.96
  4. Step 4: Simplify right side
    189,560.88x = 30,609,602,216.90
  5. Step 5: Solve for x
    x = 30,609,602,216.90/189,560.88
  6. Step 6: Final answer
    x = 161,476.37

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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.