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Finding the Fourth Proportional to 72,634.68, 100,240.14 and 54,698.04

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Solution

The fourth proportional to 72,634.68, 100,240.14 and 54,698.04 is: 75,486.52

Step by Step Solution

  1. Step 1: Write the proportion equation
    72,634.68 : 100,240.14 = 54,698.04 : x
  2. Step 2: Convert to fraction form
    72,634.68/100,240.14 = 54,698.04/x
  3. Step 3: Cross multiply
    72,634.68x = 100,240.14 × 54,698.04
  4. Step 4: Simplify right side
    72,634.68x = 5,482,939,187.33
  5. Step 5: Solve for x
    x = 5,482,939,187.33/72,634.68
  6. Step 6: Final answer
    x = 75,486.52

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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.