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Finding the Fourth Proportional to 60,622.86, 83,694.25 and 40,513.80

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Solution

The fourth proportional to 60,622.86, 83,694.25 and 40,513.80 is: 55,932.23

Step by Step Solution

  1. Step 1: Write the proportion equation
    60,622.86 : 83,694.25 = 40,513.80 : x
  2. Step 2: Convert to fraction form
    60,622.86/83,694.25 = 40,513.80/x
  3. Step 3: Cross multiply
    60,622.86x = 83,694.25 × 40,513.80
  4. Step 4: Simplify right side
    60,622.86x = 3,390,771,903.08
  5. Step 5: Solve for x
    x = 3,390,771,903.08/60,622.86
  6. Step 6: Final answer
    x = 55,932.23

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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.