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Finding the Fourth Proportional to 104,643.88, 156,960.30 and 61,390.84

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Solution

The fourth proportional to 104,643.88, 156,960.30 and 61,390.84 is: 92,083.02

Step by Step Solution

  1. Step 1: Write the proportion equation
    104,643.88 : 156,960.30 = 61,390.84 : x
  2. Step 2: Convert to fraction form
    104,643.88/156,960.30 = 61,390.84/x
  3. Step 3: Cross multiply
    104,643.88x = 156,960.30 × 61,390.84
  4. Step 4: Simplify right side
    104,643.88x = 9,635,924,663.65
  5. Step 5: Solve for x
    x = 9,635,924,663.65/104,643.88
  6. Step 6: Final answer
    x = 92,083.02

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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.