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Finding the Fourth Proportional to 163,712.97, 245,696.73 and 74,971.50

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Solution

The fourth proportional to 163,712.97, 245,696.73 and 74,971.50 is: 112,515.53

Step by Step Solution

  1. Step 1: Write the proportion equation
    163,712.97 : 245,696.73 = 74,971.50 : x
  2. Step 2: Convert to fraction form
    163,712.97/245,696.73 = 74,971.50/x
  3. Step 3: Cross multiply
    163,712.97x = 245,696.73 × 74,971.50
  4. Step 4: Simplify right side
    163,712.97x = 18,420,252,198.00
  5. Step 5: Solve for x
    x = 18,420,252,198.00/163,712.97
  6. Step 6: Final answer
    x = 112,515.53

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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.