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Finding the Fourth Proportional to 71,348.80, 106,946.40 and 26,958.40

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Solution

The fourth proportional to 71,348.80, 106,946.40 and 26,958.40 is: 40,408.58

Step by Step Solution

  1. Step 1: Write the proportion equation
    71,348.80 : 106,946.40 = 26,958.40 : x
  2. Step 2: Convert to fraction form
    71,348.80/106,946.40 = 26,958.40/x
  3. Step 3: Cross multiply
    71,348.80x = 106,946.40 × 26,958.40
  4. Step 4: Simplify right side
    71,348.80x = 2,883,103,829.76
  5. Step 5: Solve for x
    x = 2,883,103,829.76/71,348.80
  6. Step 6: Final answer
    x = 40,408.58

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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.