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Finding the Fourth Proportional to 104,987.40, 157,481.10 and 100,613.40

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Solution

The fourth proportional to 104,987.40, 157,481.10 and 100,613.40 is: 150,920.10

Step by Step Solution

  1. Step 1: Write the proportion equation
    104,987.40 : 157,481.10 = 100,613.40 : x
  2. Step 2: Convert to fraction form
    104,987.40/157,481.10 = 100,613.40/x
  3. Step 3: Cross multiply
    104,987.40x = 157,481.10 × 100,613.40
  4. Step 4: Simplify right side
    104,987.40x = 15,844,708,906.74
  5. Step 5: Solve for x
    x = 15,844,708,906.74/104,987.40
  6. Step 6: Final answer
    x = 150,920.10

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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.