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Finding the Fourth Proportional to 104,553.60, 156,868.80 and 42,230.40

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Solution

The fourth proportional to 104,553.60, 156,868.80 and 42,230.40 is: 63,361.11

Step by Step Solution

  1. Step 1: Write the proportion equation
    104,553.60 : 156,868.80 = 42,230.40 : x
  2. Step 2: Convert to fraction form
    104,553.60/156,868.80 = 42,230.40/x
  3. Step 3: Cross multiply
    104,553.60x = 156,868.80 × 42,230.40
  4. Step 4: Simplify right side
    104,553.60x = 6,624,632,171.52
  5. Step 5: Solve for x
    x = 6,624,632,171.52/104,553.60
  6. Step 6: Final answer
    x = 63,361.11

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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.