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Finding the Fourth Proportional to 173,910.20, 261,038.10 and 85,263.80

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Solution

The fourth proportional to 173,910.20, 261,038.10 and 85,263.80 is: 127,980.42

Step by Step Solution

  1. Step 1: Write the proportion equation
    173,910.20 : 261,038.10 = 85,263.80 : x
  2. Step 2: Convert to fraction form
    173,910.20/261,038.10 = 85,263.80/x
  3. Step 3: Cross multiply
    173,910.20x = 261,038.10 × 85,263.80
  4. Step 4: Simplify right side
    173,910.20x = 22,257,100,350.78
  5. Step 5: Solve for x
    x = 22,257,100,350.78/173,910.20
  6. Step 6: Final answer
    x = 127,980.42

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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.