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Finding the Fourth Proportional to 215,635.16, 323,390.46 and 73,477.28

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Solution

The fourth proportional to 215,635.16, 323,390.46 and 73,477.28 is: 110,194.70

Step by Step Solution

  1. Step 1: Write the proportion equation
    215,635.16 : 323,390.46 = 73,477.28 : x
  2. Step 2: Convert to fraction form
    215,635.16/323,390.46 = 73,477.28/x
  3. Step 3: Cross multiply
    215,635.16x = 323,390.46 × 73,477.28
  4. Step 4: Simplify right side
    215,635.16x = 23,761,851,378.75
  5. Step 5: Solve for x
    x = 23,761,851,378.75/215,635.16
  6. Step 6: Final answer
    x = 110,194.70

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Why These Related Problems?

These problems maintain the same ratio (1.50) or explore similar proportional relationships. Practicing with related ratios helps build understanding of proportional relationships.