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Finding the Fourth Proportional to 79,177.97, 118,776.75 and 25,875.32

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Solution

The fourth proportional to 79,177.97, 118,776.75 and 25,875.32 is: 38,816.17

Step by Step Solution

  1. Step 1: Write the proportion equation
    79,177.97 : 118,776.75 = 25,875.32 : x
  2. Step 2: Convert to fraction form
    79,177.97/118,776.75 = 25,875.32/x
  3. Step 3: Cross multiply
    79,177.97x = 118,776.75 × 25,875.32
  4. Step 4: Simplify right side
    79,177.97x = 3,073,385,723.89
  5. Step 5: Solve for x
    x = 3,073,385,723.89/79,177.97
  6. Step 6: Final answer
    x = 38,816.17

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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.