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Finding the Fourth Proportional to 112,615.80, 168,486.30 and 73,249.80

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Solution

The fourth proportional to 112,615.80, 168,486.30 and 73,249.80 is: 109,590.20

Step by Step Solution

  1. Step 1: Write the proportion equation
    112,615.80 : 168,486.30 = 73,249.80 : x
  2. Step 2: Convert to fraction form
    112,615.80/168,486.30 = 73,249.80/x
  3. Step 3: Cross multiply
    112,615.80x = 168,486.30 × 73,249.80
  4. Step 4: Simplify right side
    112,615.80x = 12,341,587,777.74
  5. Step 5: Solve for x
    x = 12,341,587,777.74/112,615.80
  6. Step 6: Final answer
    x = 109,590.20

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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.