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Finding the Fourth Proportional to 171,279.04, 256,742.88 and 66,056.64

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Solution

The fourth proportional to 171,279.04, 256,742.88 and 66,056.64 is: 99,017.21

Step by Step Solution

  1. Step 1: Write the proportion equation
    171,279.04 : 256,742.88 = 66,056.64 : x
  2. Step 2: Convert to fraction form
    171,279.04/256,742.88 = 66,056.64/x
  3. Step 3: Cross multiply
    171,279.04x = 256,742.88 × 66,056.64
  4. Step 4: Simplify right side
    171,279.04x = 16,959,571,996.72
  5. Step 5: Solve for x
    x = 16,959,571,996.72/171,279.04
  6. Step 6: Final answer
    x = 99,017.21

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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.