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Finding the Fourth Proportional to 280,236.51, 386,735.72 and 152,919.09

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Solution

The fourth proportional to 280,236.51, 386,735.72 and 152,919.09 is: 211,033.44

Step by Step Solution

  1. Step 1: Write the proportion equation
    280,236.51 : 386,735.72 = 152,919.09 : x
  2. Step 2: Convert to fraction form
    280,236.51/386,735.72 = 152,919.09/x
  3. Step 3: Cross multiply
    280,236.51x = 386,735.72 × 152,919.09
  4. Step 4: Simplify right side
    280,236.51x = 59,139,273,608.30
  5. Step 5: Solve for x
    x = 59,139,273,608.30/280,236.51
  6. Step 6: Final answer
    x = 211,033.44

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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.