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Finding the Fourth Proportional to 60,661.34, 83,668.08 and 40,206.41

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Solution

The fourth proportional to 60,661.34, 83,668.08 and 40,206.41 is: 55,455.31

Step by Step Solution

  1. Step 1: Write the proportion equation
    60,661.34 : 83,668.08 = 40,206.41 : x
  2. Step 2: Convert to fraction form
    60,661.34/83,668.08 = 40,206.41/x
  3. Step 3: Cross multiply
    60,661.34x = 83,668.08 × 40,206.41
  4. Step 4: Simplify right side
    60,661.34x = 3,363,992,860.83
  5. Step 5: Solve for x
    x = 3,363,992,860.83/60,661.34
  6. Step 6: Final answer
    x = 55,455.31

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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.