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Finding the Fourth Proportional to 79,575.21, 109,811.84 and 43,276.23

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Solution

The fourth proportional to 79,575.21, 109,811.84 and 43,276.23 is: 59,720.13

Step by Step Solution

  1. Step 1: Write the proportion equation
    79,575.21 : 109,811.84 = 43,276.23 : x
  2. Step 2: Convert to fraction form
    79,575.21/109,811.84 = 43,276.23/x
  3. Step 3: Cross multiply
    79,575.21x = 109,811.84 × 43,276.23
  4. Step 4: Simplify right side
    79,575.21x = 4,752,242,228.18
  5. Step 5: Solve for x
    x = 4,752,242,228.18/79,575.21
  6. Step 6: Final answer
    x = 59,720.13

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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.