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Finding the Fourth Proportional to 73,124.12, 100,911.60 and 39,590.12

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Solution

The fourth proportional to 73,124.12, 100,911.60 and 39,590.12 is: 54,634.54

Step by Step Solution

  1. Step 1: Write the proportion equation
    73,124.12 : 100,911.60 = 39,590.12 : x
  2. Step 2: Convert to fraction form
    73,124.12/100,911.60 = 39,590.12/x
  3. Step 3: Cross multiply
    73,124.12x = 100,911.60 × 39,590.12
  4. Step 4: Simplify right side
    73,124.12x = 3,995,102,353.39
  5. Step 5: Solve for x
    x = 3,995,102,353.39/73,124.12
  6. Step 6: Final answer
    x = 54,634.54

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1.5x scale

Why These Related Problems?

These problems maintain the same ratio (1.38) or explore similar proportional relationships. Practicing with related ratios helps build understanding of proportional relationships.