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Finding the Fourth Proportional to 75,124.78, 103,672.43 and 41,133.56

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Solution

The fourth proportional to 75,124.78, 103,672.43 and 41,133.56 is: 56,764.44

Step by Step Solution

  1. Step 1: Write the proportion equation
    75,124.78 : 103,672.43 = 41,133.56 : x
  2. Step 2: Convert to fraction form
    75,124.78/103,672.43 = 41,133.56/x
  3. Step 3: Cross multiply
    75,124.78x = 103,672.43 × 41,133.56
  4. Step 4: Simplify right side
    75,124.78x = 4,264,416,119.75
  5. Step 5: Solve for x
    x = 4,264,416,119.75/75,124.78
  6. Step 6: Final answer
    x = 56,764.44

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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.