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Finding the Fourth Proportional to 39,466.80, 59,171.04 and 18,666

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Solution

The fourth proportional to 39,466.80, 59,171.04 and 18,666 is: 27,985.21

Step by Step Solution

  1. Step 1: Write the proportion equation
    39,466.80 : 59,171.04 = 18,666 : x
  2. Step 2: Convert to fraction form
    39,466.80/59,171.04 = 18,666/x
  3. Step 3: Cross multiply
    39,466.80x = 59,171.04 × 18,666
  4. Step 4: Simplify right side
    39,466.80x = 1,104,486,632.64
  5. Step 5: Solve for x
    x = 1,104,486,632.64/39,466.80
  6. Step 6: Final answer
    x = 27,985.21

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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.