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Finding the Fourth Proportional to 67,291.50, 100,937.25 and 18,043.50

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Solution

The fourth proportional to 67,291.50, 100,937.25 and 18,043.50 is: 27,065.25

Step by Step Solution

  1. Step 1: Write the proportion equation
    67,291.50 : 100,937.25 = 18,043.50 : x
  2. Step 2: Convert to fraction form
    67,291.50/100,937.25 = 18,043.50/x
  3. Step 3: Cross multiply
    67,291.50x = 100,937.25 × 18,043.50
  4. Step 4: Simplify right side
    67,291.50x = 1,821,261,270.38
  5. Step 5: Solve for x
    x = 1,821,261,270.38/67,291.50
  6. Step 6: Final answer
    x = 27,065.25

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1.5x scale

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.