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Finding the Fourth Proportional to 693,672.71, 957,261.09 and 407,137.43

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Solution

The fourth proportional to 693,672.71, 957,261.09 and 407,137.43 is: 561,845.41

Step by Step Solution

  1. Step 1: Write the proportion equation
    693,672.71 : 957,261.09 = 407,137.43 : x
  2. Step 2: Convert to fraction form
    693,672.71/957,261.09 = 407,137.43/x
  3. Step 3: Cross multiply
    693,672.71x = 957,261.09 × 407,137.43
  4. Step 4: Simplify right side
    693,672.71x = 389,736,822,414.75
  5. Step 5: Solve for x
    x = 389,736,822,414.75/693,672.71
  6. Step 6: Final answer
    x = 561,845.41

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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.