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Finding the Fourth Proportional to 395,903.22, 546,353.28 and 226,138.56

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Solution

The fourth proportional to 395,903.22, 546,353.28 and 226,138.56 is: 312,075.12

Step by Step Solution

  1. Step 1: Write the proportion equation
    395,903.22 : 546,353.28 = 226,138.56 : x
  2. Step 2: Convert to fraction form
    395,903.22/546,353.28 = 226,138.56/x
  3. Step 3: Cross multiply
    395,903.22x = 546,353.28 × 226,138.56
  4. Step 4: Simplify right side
    395,903.22x = 123,551,543,990.48
  5. Step 5: Solve for x
    x = 123,551,543,990.48/395,903.22
  6. Step 6: Final answer
    x = 312,075.12

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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.