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Finding the Fourth Proportional to 117,111.26, 175,640.62 and 53,870.64

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Solution

The fourth proportional to 117,111.26, 175,640.62 and 53,870.64 is: 80,793.88

Step by Step Solution

  1. Step 1: Write the proportion equation
    117,111.26 : 175,640.62 = 53,870.64 : x
  2. Step 2: Convert to fraction form
    117,111.26/175,640.62 = 53,870.64/x
  3. Step 3: Cross multiply
    117,111.26x = 175,640.62 × 53,870.64
  4. Step 4: Simplify right side
    117,111.26x = 9,461,872,609.40
  5. Step 5: Solve for x
    x = 9,461,872,609.40/117,111.26
  6. Step 6: Final answer
    x = 80,793.88

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Why These Related Problems?

These problems maintain the same ratio (1.50) or explore similar proportional relationships. Practicing with related ratios helps build understanding of proportional relationships.