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Finding the Fourth Proportional to 68,829.58, 103,174.66 and 46,645.20

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Solution

The fourth proportional to 68,829.58, 103,174.66 and 46,645.20 is: 69,920.56

Step by Step Solution

  1. Step 1: Write the proportion equation
    68,829.58 : 103,174.66 = 46,645.20 : x
  2. Step 2: Convert to fraction form
    68,829.58/103,174.66 = 46,645.20/x
  3. Step 3: Cross multiply
    68,829.58x = 103,174.66 × 46,645.20
  4. Step 4: Simplify right side
    68,829.58x = 4,812,602,708.94
  5. Step 5: Solve for x
    x = 4,812,602,708.94/68,829.58
  6. Step 6: Final answer
    x = 69,920.56

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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.