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Finding the Fourth Proportional to 220,100.20, 330,053.10 and 86,936.20

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Solution

The fourth proportional to 220,100.20, 330,053.10 and 86,936.20 is: 130,365.91

Step by Step Solution

  1. Step 1: Write the proportion equation
    220,100.20 : 330,053.10 = 86,936.20 : x
  2. Step 2: Convert to fraction form
    220,100.20/330,053.10 = 86,936.20/x
  3. Step 3: Cross multiply
    220,100.20x = 330,053.10 × 86,936.20
  4. Step 4: Simplify right side
    220,100.20x = 28,693,562,312.22
  5. Step 5: Solve for x
    x = 28,693,562,312.22/220,100.20
  6. Step 6: Final answer
    x = 130,365.91

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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.