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Finding the Fourth Proportional to 66,412.32, 99,621.12 and 22,043.04

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Solution

The fourth proportional to 66,412.32, 99,621.12 and 22,043.04 is: 33,065.44

Step by Step Solution

  1. Step 1: Write the proportion equation
    66,412.32 : 99,621.12 = 22,043.04 : x
  2. Step 2: Convert to fraction form
    66,412.32/99,621.12 = 22,043.04/x
  3. Step 3: Cross multiply
    66,412.32x = 99,621.12 × 22,043.04
  4. Step 4: Simplify right side
    66,412.32x = 2,195,952,333.00
  5. Step 5: Solve for x
    x = 2,195,952,333.00/66,412.32
  6. Step 6: Final answer
    x = 33,065.44

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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.