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Finding the Fourth Proportional to 220,513.20, 309,133.20 and 220,513.20

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Solution

The fourth proportional to 220,513.20, 309,133.20 and 220,513.20 is: 309,133.20

Step by Step Solution

  1. Step 1: Write the proportion equation
    220,513.20 : 309,133.20 = 220,513.20 : x
  2. Step 2: Convert to fraction form
    220,513.20/309,133.20 = 220,513.20/x
  3. Step 3: Cross multiply
    220,513.20x = 309,133.20 × 220,513.20
  4. Step 4: Simplify right side
    220,513.20x = 68,167,951,158.24
  5. Step 5: Solve for x
    x = 68,167,951,158.24/220,513.20
  6. Step 6: Final answer
    x = 309,133.20

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1.5x scale

Why These Related Problems?

These problems maintain the same ratio (1.40) or explore similar proportional relationships. Practicing with related ratios helps build understanding of proportional relationships.