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Finding the Fourth Proportional to 642,618.22, 886,797.96 and 356,132.14

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Solution

The fourth proportional to 642,618.22, 886,797.96 and 356,132.14 is: 491,453.94

Step by Step Solution

  1. Step 1: Write the proportion equation
    642,618.22 : 886,797.96 = 356,132.14 : x
  2. Step 2: Convert to fraction form
    642,618.22/886,797.96 = 356,132.14/x
  3. Step 3: Cross multiply
    642,618.22x = 886,797.96 × 356,132.14
  4. Step 4: Simplify right side
    642,618.22x = 315,817,255,242.43
  5. Step 5: Solve for x
    x = 315,817,255,242.43/642,618.22
  6. Step 6: Final answer
    x = 491,453.94

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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.