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Finding the Fourth Proportional to 40,678.72, 60,918.72 and 25,074.88

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Solution

The fourth proportional to 40,678.72, 60,918.72 and 25,074.88 is: 37,551.07

Step by Step Solution

  1. Step 1: Write the proportion equation
    40,678.72 : 60,918.72 = 25,074.88 : x
  2. Step 2: Convert to fraction form
    40,678.72/60,918.72 = 25,074.88/x
  3. Step 3: Cross multiply
    40,678.72x = 60,918.72 × 25,074.88
  4. Step 4: Simplify right side
    40,678.72x = 1,527,529,593.75
  5. Step 5: Solve for x
    x = 1,527,529,593.75/40,678.72
  6. Step 6: Final answer
    x = 37,551.07

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1.5x scale

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.