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Finding the Fourth Proportional to 83,318.88, 114,979.71 and 45,078.48

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Solution

The fourth proportional to 83,318.88, 114,979.71 and 45,078.48 is: 62,208.12

Step by Step Solution

  1. Step 1: Write the proportion equation
    83,318.88 : 114,979.71 = 45,078.48 : x
  2. Step 2: Convert to fraction form
    83,318.88/114,979.71 = 45,078.48/x
  3. Step 3: Cross multiply
    83,318.88x = 114,979.71 × 45,078.48
  4. Step 4: Simplify right side
    83,318.88x = 5,183,110,557.64
  5. Step 5: Solve for x
    x = 5,183,110,557.64/83,318.88
  6. Step 6: Final answer
    x = 62,208.12

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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.