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Finding the Fourth Proportional to 62,790.59, 94,199.75 and 20,668.97

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Solution

The fourth proportional to 62,790.59, 94,199.75 and 20,668.97 is: 31,008.01

Step by Step Solution

  1. Step 1: Write the proportion equation
    62,790.59 : 94,199.75 = 20,668.97 : x
  2. Step 2: Convert to fraction form
    62,790.59/94,199.75 = 20,668.97/x
  3. Step 3: Cross multiply
    62,790.59x = 94,199.75 × 20,668.97
  4. Step 4: Simplify right side
    62,790.59x = 1,947,011,232.41
  5. Step 5: Solve for x
    x = 1,947,011,232.41/62,790.59
  6. Step 6: Final answer
    x = 31,008.01

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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.