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Finding the Fourth Proportional to 29,173.25, 40,259.09 and 15,925.25

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Solution

The fourth proportional to 29,173.25, 40,259.09 and 15,925.25 is: 21,976.85

Step by Step Solution

  1. Step 1: Write the proportion equation
    29,173.25 : 40,259.09 = 15,925.25 : x
  2. Step 2: Convert to fraction form
    29,173.25/40,259.09 = 15,925.25/x
  3. Step 3: Cross multiply
    29,173.25x = 40,259.09 × 15,925.25
  4. Step 4: Simplify right side
    29,173.25x = 641,135,993.40
  5. Step 5: Solve for x
    x = 641,135,993.40/29,173.25
  6. Step 6: Final answer
    x = 21,976.85

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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.