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Finding the Fourth Proportional to 79,172.91, 118,776.65 and 26,581.01

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Solution

The fourth proportional to 79,172.91, 118,776.65 and 26,581.01 is: 39,877.31

Step by Step Solution

  1. Step 1: Write the proportion equation
    79,172.91 : 118,776.65 = 26,581.01 : x
  2. Step 2: Convert to fraction form
    79,172.91/118,776.65 = 26,581.01/x
  3. Step 3: Cross multiply
    79,172.91x = 118,776.65 × 26,581.01
  4. Step 4: Simplify right side
    79,172.91x = 3,157,202,594.63
  5. Step 5: Solve for x
    x = 3,157,202,594.63/79,172.91
  6. Step 6: Final answer
    x = 39,877.31

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Why These Related Problems?

These problems maintain the same ratio (1.50) or explore similar proportional relationships. Practicing with related ratios helps build understanding of proportional relationships.