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Finding the Fourth Proportional to 72,476.19, 100,041.93 and 43,811.91

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Solution

The fourth proportional to 72,476.19, 100,041.93 and 43,811.91 is: 60,475.42

Step by Step Solution

  1. Step 1: Write the proportion equation
    72,476.19 : 100,041.93 = 43,811.91 : x
  2. Step 2: Convert to fraction form
    72,476.19/100,041.93 = 43,811.91/x
  3. Step 3: Cross multiply
    72,476.19x = 100,041.93 × 43,811.91
  4. Step 4: Simplify right side
    72,476.19x = 4,383,028,033.39
  5. Step 5: Solve for x
    x = 4,383,028,033.39/72,476.19
  6. Step 6: Final answer
    x = 60,475.42

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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.