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Finding the Fourth Proportional to 116,530.11, 160,811.32 and 65,542.03

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Solution

The fourth proportional to 116,530.11, 160,811.32 and 65,542.03 is: 90,447.87

Step by Step Solution

  1. Step 1: Write the proportion equation
    116,530.11 : 160,811.32 = 65,542.03 : x
  2. Step 2: Convert to fraction form
    116,530.11/160,811.32 = 65,542.03/x
  3. Step 3: Cross multiply
    116,530.11x = 160,811.32 × 65,542.03
  4. Step 4: Simplify right side
    116,530.11x = 10,539,900,359.78
  5. Step 5: Solve for x
    x = 10,539,900,359.78/116,530.11
  6. Step 6: Final answer
    x = 90,447.87

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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.