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Finding the Fourth Proportional to 113,788.40, 156,990.52 and 73,525.88

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Solution

The fourth proportional to 113,788.40, 156,990.52 and 73,525.88 is: 101,441.50

Step by Step Solution

  1. Step 1: Write the proportion equation
    113,788.40 : 156,990.52 = 73,525.88 : x
  2. Step 2: Convert to fraction form
    113,788.40/156,990.52 = 73,525.88/x
  3. Step 3: Cross multiply
    113,788.40x = 156,990.52 × 73,525.88
  4. Step 4: Simplify right side
    113,788.40x = 11,542,866,134.66
  5. Step 5: Solve for x
    x = 11,542,866,134.66/113,788.40
  6. Step 6: Final answer
    x = 101,441.50

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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.