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Finding the Fourth Proportional to 110,987.80, 166,481.70 and 48,658.30

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Solution

The fourth proportional to 110,987.80, 166,481.70 and 48,658.30 is: 72,987.45

Step by Step Solution

  1. Step 1: Write the proportion equation
    110,987.80 : 166,481.70 = 48,658.30 : x
  2. Step 2: Convert to fraction form
    110,987.80/166,481.70 = 48,658.30/x
  3. Step 3: Cross multiply
    110,987.80x = 166,481.70 × 48,658.30
  4. Step 4: Simplify right side
    110,987.80x = 8,100,716,503.11
  5. Step 5: Solve for x
    x = 8,100,716,503.11/110,987.80
  6. Step 6: Final answer
    x = 72,987.45

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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.