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Finding the Fourth Proportional to 416,415.44, 574,655.16 and 225,428.82

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Solution

The fourth proportional to 416,415.44, 574,655.16 and 225,428.82 is: 311,092.77

Step by Step Solution

  1. Step 1: Write the proportion equation
    416,415.44 : 574,655.16 = 225,428.82 : x
  2. Step 2: Convert to fraction form
    416,415.44/574,655.16 = 225,428.82/x
  3. Step 3: Cross multiply
    416,415.44x = 574,655.16 × 225,428.82
  4. Step 4: Simplify right side
    416,415.44x = 129,543,834,625.71
  5. Step 5: Solve for x
    x = 129,543,834,625.71/416,415.44
  6. Step 6: Final answer
    x = 311,092.77

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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.