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Finding the Fourth Proportional to 407,057.31, 561,649.14 and 234,938.70

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Solution

The fourth proportional to 407,057.31, 561,649.14 and 234,938.70 is: 324,163.49

Step by Step Solution

  1. Step 1: Write the proportion equation
    407,057.31 : 561,649.14 = 234,938.70 : x
  2. Step 2: Convert to fraction form
    407,057.31/561,649.14 = 234,938.70/x
  3. Step 3: Cross multiply
    407,057.31x = 561,649.14 × 234,938.70
  4. Step 4: Simplify right side
    407,057.31x = 131,953,118,807.72
  5. Step 5: Solve for x
    x = 131,953,118,807.72/407,057.31
  6. Step 6: Final answer
    x = 324,163.49

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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.