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Finding the Fourth Proportional to 469,417.55, 647,796.39 and 254,557.56

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Solution

The fourth proportional to 469,417.55, 647,796.39 and 254,557.56 is: 351,289.53

Step by Step Solution

  1. Step 1: Write the proportion equation
    469,417.55 : 647,796.39 = 254,557.56 : x
  2. Step 2: Convert to fraction form
    469,417.55/647,796.39 = 254,557.56/x
  3. Step 3: Cross multiply
    469,417.55x = 647,796.39 × 254,557.56
  4. Step 4: Simplify right side
    469,417.55x = 164,901,468,415.21
  5. Step 5: Solve for x
    x = 164,901,468,415.21/469,417.55
  6. Step 6: Final answer
    x = 351,289.53

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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.