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Finding the Fourth Proportional to 66,198.40, 99,297.60 and 58,940.80

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Solution

The fourth proportional to 66,198.40, 99,297.60 and 58,940.80 is: 88,411.20

Step by Step Solution

  1. Step 1: Write the proportion equation
    66,198.40 : 99,297.60 = 58,940.80 : x
  2. Step 2: Convert to fraction form
    66,198.40/99,297.60 = 58,940.80/x
  3. Step 3: Cross multiply
    66,198.40x = 99,297.60 × 58,940.80
  4. Step 4: Simplify right side
    66,198.40x = 5,852,679,982.08
  5. Step 5: Solve for x
    x = 5,852,679,982.08/66,198.40
  6. Step 6: Final answer
    x = 88,411.20

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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.