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Finding the Fourth Proportional to 62,518.61, 93,786.15 and 20,383.90

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Solution

The fourth proportional to 62,518.61, 93,786.15 and 20,383.90 is: 30,578.53

Step by Step Solution

  1. Step 1: Write the proportion equation
    62,518.61 : 93,786.15 = 20,383.90 : x
  2. Step 2: Convert to fraction form
    62,518.61/93,786.15 = 20,383.90/x
  3. Step 3: Cross multiply
    62,518.61x = 93,786.15 × 20,383.90
  4. Step 4: Simplify right side
    62,518.61x = 1,911,727,502.99
  5. Step 5: Solve for x
    x = 1,911,727,502.99/62,518.61
  6. Step 6: Final answer
    x = 30,578.53

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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.