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Finding the Fourth Proportional to 628,025.45, 866,656.58 and 356,118.17

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Solution

The fourth proportional to 628,025.45, 866,656.58 and 356,118.17 is: 491,432.56

Step by Step Solution

  1. Step 1: Write the proportion equation
    628,025.45 : 866,656.58 = 356,118.17 : x
  2. Step 2: Convert to fraction form
    628,025.45/866,656.58 = 356,118.17/x
  3. Step 3: Cross multiply
    628,025.45x = 866,656.58 × 356,118.17
  4. Step 4: Simplify right side
    628,025.45x = 308,632,149,174.19
  5. Step 5: Solve for x
    x = 308,632,149,174.19/628,025.45
  6. Step 6: Final answer
    x = 491,432.56

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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.