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Finding the Fourth Proportional to 116,815.80, 175,266.90 and 112,495.80

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Solution

The fourth proportional to 116,815.80, 175,266.90 and 112,495.80 is: 168,785.30

Step by Step Solution

  1. Step 1: Write the proportion equation
    116,815.80 : 175,266.90 = 112,495.80 : x
  2. Step 2: Convert to fraction form
    116,815.80/175,266.90 = 112,495.80/x
  3. Step 3: Cross multiply
    116,815.80x = 175,266.90 × 112,495.80
  4. Step 4: Simplify right side
    116,815.80x = 19,716,790,129.02
  5. Step 5: Solve for x
    x = 19,716,790,129.02/116,815.80
  6. Step 6: Final answer
    x = 168,785.30

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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.