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Finding the Fourth Proportional to 29,173.75, 40,259.78 and 15,925.75

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Solution

The fourth proportional to 29,173.75, 40,259.78 and 15,925.75 is: 21,977.54

Step by Step Solution

  1. Step 1: Write the proportion equation
    29,173.75 : 40,259.78 = 15,925.75 : x
  2. Step 2: Convert to fraction form
    29,173.75/40,259.78 = 15,925.75/x
  3. Step 3: Cross multiply
    29,173.75x = 40,259.78 × 15,925.75
  4. Step 4: Simplify right side
    29,173.75x = 641,167,191.34
  5. Step 5: Solve for x
    x = 641,167,191.34/29,173.75
  6. Step 6: Final answer
    x = 21,977.54

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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.