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Finding the Fourth Proportional to 66,768.80, 100,153.20 and 59,511.20

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Solution

The fourth proportional to 66,768.80, 100,153.20 and 59,511.20 is: 89,266.80

Step by Step Solution

  1. Step 1: Write the proportion equation
    66,768.80 : 100,153.20 = 59,511.20 : x
  2. Step 2: Convert to fraction form
    66,768.80/100,153.20 = 59,511.20/x
  3. Step 3: Cross multiply
    66,768.80x = 100,153.20 × 59,511.20
  4. Step 4: Simplify right side
    66,768.80x = 5,960,237,115.84
  5. Step 5: Solve for x
    x = 5,960,237,115.84/66,768.80
  6. Step 6: Final answer
    x = 89,266.80

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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.