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Finding the Fourth Proportional to 100,624.80, 150,937.20 and 48,136.80

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Solution

The fourth proportional to 100,624.80, 150,937.20 and 48,136.80 is: 72,205.20

Step by Step Solution

  1. Step 1: Write the proportion equation
    100,624.80 : 150,937.20 = 48,136.80 : x
  2. Step 2: Convert to fraction form
    100,624.80/150,937.20 = 48,136.80/x
  3. Step 3: Cross multiply
    100,624.80x = 150,937.20 × 48,136.80
  4. Step 4: Simplify right side
    100,624.80x = 7,265,633,808.96
  5. Step 5: Solve for x
    x = 7,265,633,808.96/100,624.80
  6. Step 6: Final answer
    x = 72,205.20

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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.