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Finding the Fourth Proportional to 311,276.58, 429,563.45 and 177,140.58

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Solution

The fourth proportional to 311,276.58, 429,563.45 and 177,140.58 is: 244,455.01

Step by Step Solution

  1. Step 1: Write the proportion equation
    311,276.58 : 429,563.45 = 177,140.58 : x
  2. Step 2: Convert to fraction form
    311,276.58/429,563.45 = 177,140.58/x
  3. Step 3: Cross multiply
    311,276.58x = 429,563.45 × 177,140.58
  4. Step 4: Simplify right side
    311,276.58x = 76,093,118,679.80
  5. Step 5: Solve for x
    x = 76,093,118,679.80/311,276.58
  6. Step 6: Final answer
    x = 244,455.01

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1.5x scale

Why These Related Problems?

These problems maintain the same ratio (1.38) or explore similar proportional relationships. Practicing with related ratios helps build understanding of proportional relationships.