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Finding the Fourth Proportional to 628,179.50, 866,888.12 and 356,160.44

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Solution

The fourth proportional to 628,179.50, 866,888.12 and 356,160.44 is: 491,501.64

Step by Step Solution

  1. Step 1: Write the proportion equation
    628,179.50 : 866,888.12 = 356,160.44 : x
  2. Step 2: Convert to fraction form
    628,179.50/866,888.12 = 356,160.44/x
  3. Step 3: Cross multiply
    628,179.50x = 866,888.12 × 356,160.44
  4. Step 4: Simplify right side
    628,179.50x = 308,751,254,249.97
  5. Step 5: Solve for x
    x = 308,751,254,249.97/628,179.50
  6. Step 6: Final answer
    x = 491,501.64

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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.