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Finding the Fourth Proportional to 116,318.88, 160,517.88 and 65,332.08

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Solution

The fourth proportional to 116,318.88, 160,517.88 and 65,332.08 is: 90,157.05

Step by Step Solution

  1. Step 1: Write the proportion equation
    116,318.88 : 160,517.88 = 65,332.08 : x
  2. Step 2: Convert to fraction form
    116,318.88/160,517.88 = 65,332.08/x
  3. Step 3: Cross multiply
    116,318.88x = 160,517.88 × 65,332.08
  4. Step 4: Simplify right side
    116,318.88x = 10,486,966,977.59
  5. Step 5: Solve for x
    x = 10,486,966,977.59/116,318.88
  6. Step 6: Final answer
    x = 90,157.05

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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.