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Finding the Fourth Proportional to 50,931.01, 76,400.60 and 19,356.20

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Solution

The fourth proportional to 50,931.01, 76,400.60 and 19,356.20 is: 29,035.85

Step by Step Solution

  1. Step 1: Write the proportion equation
    50,931.01 : 76,400.60 = 19,356.20 : x
  2. Step 2: Convert to fraction form
    50,931.01/76,400.60 = 19,356.20/x
  3. Step 3: Cross multiply
    50,931.01x = 76,400.60 × 19,356.20
  4. Step 4: Simplify right side
    50,931.01x = 1,478,825,293.72
  5. Step 5: Solve for x
    x = 1,478,825,293.72/50,931.01
  6. Step 6: Final answer
    x = 29,035.85

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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.