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Finding the Fourth Proportional to 66,870.26, 100,173.88 and 48,105.80

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Solution

The fourth proportional to 66,870.26, 100,173.88 and 48,105.80 is: 72,064.09

Step by Step Solution

  1. Step 1: Write the proportion equation
    66,870.26 : 100,173.88 = 48,105.80 : x
  2. Step 2: Convert to fraction form
    66,870.26/100,173.88 = 48,105.80/x
  3. Step 3: Cross multiply
    66,870.26x = 100,173.88 × 48,105.80
  4. Step 4: Simplify right side
    66,870.26x = 4,818,944,636.50
  5. Step 5: Solve for x
    x = 4,818,944,636.50/66,870.26
  6. Step 6: Final answer
    x = 72,064.09

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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.