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Finding the Fourth Proportional to 74,829.84, 112,028.82 and 69,574.92

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Solution

The fourth proportional to 74,829.84, 112,028.82 and 69,574.92 is: 104,161.60

Step by Step Solution

  1. Step 1: Write the proportion equation
    74,829.84 : 112,028.82 = 69,574.92 : x
  2. Step 2: Convert to fraction form
    74,829.84/112,028.82 = 69,574.92/x
  3. Step 3: Cross multiply
    74,829.84x = 112,028.82 × 69,574.92
  4. Step 4: Simplify right side
    74,829.84x = 7,794,396,189.19
  5. Step 5: Solve for x
    x = 7,794,396,189.19/74,829.84
  6. Step 6: Final answer
    x = 104,161.60

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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.