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Finding the Fourth Proportional to 50,978.74, 70,358.33 and 36,685.89

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Solution

The fourth proportional to 50,978.74, 70,358.33 and 36,685.89 is: 50,632.05

Step by Step Solution

  1. Step 1: Write the proportion equation
    50,978.74 : 70,358.33 = 36,685.89 : x
  2. Step 2: Convert to fraction form
    50,978.74/70,358.33 = 36,685.89/x
  3. Step 3: Cross multiply
    50,978.74x = 70,358.33 × 36,685.89
  4. Step 4: Simplify right side
    50,978.74x = 2,581,157,954.96
  5. Step 5: Solve for x
    x = 2,581,157,954.96/50,978.74
  6. Step 6: Final answer
    x = 50,632.05

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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.