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Finding the Fourth Proportional to 203,068.44, 280,224.16 and 111,185.28

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Solution

The fourth proportional to 203,068.44, 280,224.16 and 111,185.28 is: 153,430.05

Step by Step Solution

  1. Step 1: Write the proportion equation
    203,068.44 : 280,224.16 = 111,185.28 : x
  2. Step 2: Convert to fraction form
    203,068.44/280,224.16 = 111,185.28/x
  3. Step 3: Cross multiply
    203,068.44x = 280,224.16 × 111,185.28
  4. Step 4: Simplify right side
    203,068.44x = 31,156,801,692.36
  5. Step 5: Solve for x
    x = 31,156,801,692.36/203,068.44
  6. Step 6: Final answer
    x = 153,430.05

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1.5x scale

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.