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Finding the Fourth Proportional to 217,385.44, 300,016.90 and 144,784.32

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Solution

The fourth proportional to 217,385.44, 300,016.90 and 144,784.32 is: 199,819.01

Step by Step Solution

  1. Step 1: Write the proportion equation
    217,385.44 : 300,016.90 = 144,784.32 : x
  2. Step 2: Convert to fraction form
    217,385.44/300,016.90 = 144,784.32/x
  3. Step 3: Cross multiply
    217,385.44x = 300,016.90 × 144,784.32
  4. Step 4: Simplify right side
    217,385.44x = 43,437,742,855.01
  5. Step 5: Solve for x
    x = 43,437,742,855.01/217,385.44
  6. Step 6: Final answer
    x = 199,819.01

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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.