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Finding the Fourth Proportional to 104,643.10, 156,964.65 and 73,150.30

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Solution

The fourth proportional to 104,643.10, 156,964.65 and 73,150.30 is: 109,725.45

Step by Step Solution

  1. Step 1: Write the proportion equation
    104,643.10 : 156,964.65 = 73,150.30 : x
  2. Step 2: Convert to fraction form
    104,643.10/156,964.65 = 73,150.30/x
  3. Step 3: Cross multiply
    104,643.10x = 156,964.65 × 73,150.30
  4. Step 4: Simplify right side
    104,643.10x = 11,482,011,236.90
  5. Step 5: Solve for x
    x = 11,482,011,236.90/104,643.10
  6. Step 6: Final answer
    x = 109,725.45

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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.