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Finding the Fourth Proportional to 104,627.76, 144,409.36 and 68,821.12

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Solution

The fourth proportional to 104,627.76, 144,409.36 and 68,821.12 is: 94,988.31

Step by Step Solution

  1. Step 1: Write the proportion equation
    104,627.76 : 144,409.36 = 68,821.12 : x
  2. Step 2: Convert to fraction form
    104,627.76/144,409.36 = 68,821.12/x
  3. Step 3: Cross multiply
    104,627.76x = 144,409.36 × 68,821.12
  4. Step 4: Simplify right side
    104,627.76x = 9,938,413,893.68
  5. Step 5: Solve for x
    x = 9,938,413,893.68/104,627.76
  6. Step 6: Final answer
    x = 94,988.31

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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.