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Finding the Fourth Proportional to 104,463.70, 156,695.55 and 70,783.90

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Solution

The fourth proportional to 104,463.70, 156,695.55 and 70,783.90 is: 106,175.85

Step by Step Solution

  1. Step 1: Write the proportion equation
    104,463.70 : 156,695.55 = 70,783.90 : x
  2. Step 2: Convert to fraction form
    104,463.70/156,695.55 = 70,783.90/x
  3. Step 3: Cross multiply
    104,463.70x = 156,695.55 × 70,783.90
  4. Step 4: Simplify right side
    104,463.70x = 11,091,522,141.65
  5. Step 5: Solve for x
    x = 11,091,522,141.65/104,463.70
  6. Step 6: Final answer
    x = 106,175.85

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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.