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Finding the Fourth Proportional to 213,693.64, 320,561.82 and 73,433.80

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Solution

The fourth proportional to 213,693.64, 320,561.82 and 73,433.80 is: 110,158.04

Step by Step Solution

  1. Step 1: Write the proportion equation
    213,693.64 : 320,561.82 = 73,433.80 : x
  2. Step 2: Convert to fraction form
    213,693.64/320,561.82 = 73,433.80/x
  3. Step 3: Cross multiply
    213,693.64x = 320,561.82 × 73,433.80
  4. Step 4: Simplify right side
    213,693.64x = 23,540,072,577.52
  5. Step 5: Solve for x
    x = 23,540,072,577.52/213,693.64
  6. Step 6: Final answer
    x = 110,158.04

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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.