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Finding the Fourth Proportional to 680,231.43, 939,106.56 and 451,098.05

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Solution

The fourth proportional to 680,231.43, 939,106.56 and 451,098.05 is: 622,772.07

Step by Step Solution

  1. Step 1: Write the proportion equation
    680,231.43 : 939,106.56 = 451,098.05 : x
  2. Step 2: Convert to fraction form
    680,231.43/939,106.56 = 451,098.05/x
  3. Step 3: Cross multiply
    680,231.43x = 939,106.56 × 451,098.05
  4. Step 4: Simplify right side
    680,231.43x = 423,629,138,636.46
  5. Step 5: Solve for x
    x = 423,629,138,636.46/680,231.43
  6. Step 6: Final answer
    x = 622,772.07

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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.