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Finding the Fourth Proportional to 112,993.74, 155,930.91 and 62,007.32

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Solution

The fourth proportional to 112,993.74, 155,930.91 and 62,007.32 is: 85,569.85

Step by Step Solution

  1. Step 1: Write the proportion equation
    112,993.74 : 155,930.91 = 62,007.32 : x
  2. Step 2: Convert to fraction form
    112,993.74/155,930.91 = 62,007.32/x
  3. Step 3: Cross multiply
    112,993.74x = 155,930.91 × 62,007.32
  4. Step 4: Simplify right side
    112,993.74x = 9,668,857,834.26
  5. Step 5: Solve for x
    x = 9,668,857,834.26/112,993.74
  6. Step 6: Final answer
    x = 85,569.85

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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.