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Finding the Fourth Proportional to 173,716.80, 260,661.60 and 68,539.20

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Solution

The fourth proportional to 173,716.80, 260,661.60 and 68,539.20 is: 102,842.89

Step by Step Solution

  1. Step 1: Write the proportion equation
    173,716.80 : 260,661.60 = 68,539.20 : x
  2. Step 2: Convert to fraction form
    173,716.80/260,661.60 = 68,539.20/x
  3. Step 3: Cross multiply
    173,716.80x = 260,661.60 × 68,539.20
  4. Step 4: Simplify right side
    173,716.80x = 17,865,537,534.72
  5. Step 5: Solve for x
    x = 17,865,537,534.72/173,716.80
  6. Step 6: Final answer
    x = 102,842.89

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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.