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Finding the Fourth Proportional to 104,606.78, 156,860.76 and 38,000.48

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Solution

The fourth proportional to 104,606.78, 156,860.76 and 38,000.48 is: 56,982.77

Step by Step Solution

  1. Step 1: Write the proportion equation
    104,606.78 : 156,860.76 = 38,000.48 : x
  2. Step 2: Convert to fraction form
    104,606.78/156,860.76 = 38,000.48/x
  3. Step 3: Cross multiply
    104,606.78x = 156,860.76 × 38,000.48
  4. Step 4: Simplify right side
    104,606.78x = 5,960,784,173.16
  5. Step 5: Solve for x
    x = 5,960,784,173.16/104,606.78
  6. Step 6: Final answer
    x = 56,982.77

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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.