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Finding the Fourth Proportional to 79,609.40, 109,858.20 and 43,799.04

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Solution

The fourth proportional to 79,609.40, 109,858.20 and 43,799.04 is: 60,441.15

Step by Step Solution

  1. Step 1: Write the proportion equation
    79,609.40 : 109,858.20 = 43,799.04 : x
  2. Step 2: Convert to fraction form
    79,609.40/109,858.20 = 43,799.04/x
  3. Step 3: Cross multiply
    79,609.40x = 109,858.20 × 43,799.04
  4. Step 4: Simplify right side
    79,609.40x = 4,811,683,696.13
  5. Step 5: Solve for x
    x = 4,811,683,696.13/79,609.40
  6. Step 6: Final answer
    x = 60,441.15

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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.