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Finding the Fourth Proportional to 104,454.85, 144,101.44 and 61,988.78

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Solution

The fourth proportional to 104,454.85, 144,101.44 and 61,988.78 is: 85,517.07

Step by Step Solution

  1. Step 1: Write the proportion equation
    104,454.85 : 144,101.44 = 61,988.78 : x
  2. Step 2: Convert to fraction form
    104,454.85/144,101.44 = 61,988.78/x
  3. Step 3: Cross multiply
    104,454.85x = 144,101.44 × 61,988.78
  4. Step 4: Simplify right side
    104,454.85x = 8,932,672,461.84
  5. Step 5: Solve for x
    x = 8,932,672,461.84/104,454.85
  6. Step 6: Final answer
    x = 85,517.07

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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.