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Finding the Fourth Proportional to 50,661.44, 75,929.87 and 28,428.11

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Solution

The fourth proportional to 50,661.44, 75,929.87 and 28,428.11 is: 42,607.21

Step by Step Solution

  1. Step 1: Write the proportion equation
    50,661.44 : 75,929.87 = 28,428.11 : x
  2. Step 2: Convert to fraction form
    50,661.44/75,929.87 = 28,428.11/x
  3. Step 3: Cross multiply
    50,661.44x = 75,929.87 × 28,428.11
  4. Step 4: Simplify right side
    50,661.44x = 2,158,542,174.86
  5. Step 5: Solve for x
    x = 2,158,542,174.86/50,661.44
  6. Step 6: Final answer
    x = 42,607.21

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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.