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Finding the Fourth Proportional to 104,628.60, 156,942.90 and 38,070.90

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Solution

The fourth proportional to 104,628.60, 156,942.90 and 38,070.90 is: 57,106.35

Step by Step Solution

  1. Step 1: Write the proportion equation
    104,628.60 : 156,942.90 = 38,070.90 : x
  2. Step 2: Convert to fraction form
    104,628.60/156,942.90 = 38,070.90/x
  3. Step 3: Cross multiply
    104,628.60x = 156,942.90 × 38,070.90
  4. Step 4: Simplify right side
    104,628.60x = 5,974,957,451.61
  5. Step 5: Solve for x
    x = 5,974,957,451.61/104,628.60
  6. Step 6: Final answer
    x = 57,106.35

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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.