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Finding the Fourth Proportional to 104,780.99, 156,921.36 and 60,314.30

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Solution

The fourth proportional to 104,780.99, 156,921.36 and 60,314.30 is: 90,327.47

Step by Step Solution

  1. Step 1: Write the proportion equation
    104,780.99 : 156,921.36 = 60,314.30 : x
  2. Step 2: Convert to fraction form
    104,780.99/156,921.36 = 60,314.30/x
  3. Step 3: Cross multiply
    104,780.99x = 156,921.36 × 60,314.30
  4. Step 4: Simplify right side
    104,780.99x = 9,464,601,983.45
  5. Step 5: Solve for x
    x = 9,464,601,983.45/104,780.99
  6. Step 6: Final answer
    x = 90,327.47

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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.