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Finding the Fourth Proportional to 104,367.46, 144,129.41 and 72,184.54

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Solution

The fourth proportional to 104,367.46, 144,129.41 and 72,184.54 is: 99,685.43

Step by Step Solution

  1. Step 1: Write the proportion equation
    104,367.46 : 144,129.41 = 72,184.54 : x
  2. Step 2: Convert to fraction form
    104,367.46/144,129.41 = 72,184.54/x
  3. Step 3: Cross multiply
    104,367.46x = 144,129.41 × 72,184.54
  4. Step 4: Simplify right side
    104,367.46x = 10,403,915,161.32
  5. Step 5: Solve for x
    x = 10,403,915,161.32/104,367.46
  6. Step 6: Final answer
    x = 99,685.43

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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.