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Finding the Fourth Proportional to 104,429.90, 156,693.45 and 54,566.30

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Solution

The fourth proportional to 104,429.90, 156,693.45 and 54,566.30 is: 81,874.84

Step by Step Solution

  1. Step 1: Write the proportion equation
    104,429.90 : 156,693.45 = 54,566.30 : x
  2. Step 2: Convert to fraction form
    104,429.90/156,693.45 = 54,566.30/x
  3. Step 3: Cross multiply
    104,429.90x = 156,693.45 × 54,566.30
  4. Step 4: Simplify right side
    104,429.90x = 8,550,181,800.74
  5. Step 5: Solve for x
    x = 8,550,181,800.74/104,429.90
  6. Step 6: Final answer
    x = 81,874.84

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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.