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Finding the Fourth Proportional to 78,609.80, 117,914.70 and 26,024.60

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Solution

The fourth proportional to 78,609.80, 117,914.70 and 26,024.60 is: 39,036.90

Step by Step Solution

  1. Step 1: Write the proportion equation
    78,609.80 : 117,914.70 = 26,024.60 : x
  2. Step 2: Convert to fraction form
    78,609.80/117,914.70 = 26,024.60/x
  3. Step 3: Cross multiply
    78,609.80x = 117,914.70 × 26,024.60
  4. Step 4: Simplify right side
    78,609.80x = 3,068,682,901.62
  5. Step 5: Solve for x
    x = 3,068,682,901.62/78,609.80
  6. Step 6: Final answer
    x = 39,036.90

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1.5x scale

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.