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Finding the Fourth Proportional to 204,785.63, 307,316.76 and 71,667.05

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Solution

The fourth proportional to 204,785.63, 307,316.76 and 71,667.05 is: 107,548.98

Step by Step Solution

  1. Step 1: Write the proportion equation
    204,785.63 : 307,316.76 = 71,667.05 : x
  2. Step 2: Convert to fraction form
    204,785.63/307,316.76 = 71,667.05/x
  3. Step 3: Cross multiply
    204,785.63x = 307,316.76 × 71,667.05
  4. Step 4: Simplify right side
    204,785.63x = 22,024,485,604.76
  5. Step 5: Solve for x
    x = 22,024,485,604.76/204,785.63
  6. Step 6: Final answer
    x = 107,548.98

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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.