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Finding the Fourth Proportional to 108,212.20, 149,310.18 and 63,476.20

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Solution

The fourth proportional to 108,212.20, 149,310.18 and 63,476.20 is: 87,583.87

Step by Step Solution

  1. Step 1: Write the proportion equation
    108,212.20 : 149,310.18 = 63,476.20 : x
  2. Step 2: Convert to fraction form
    108,212.20/149,310.18 = 63,476.20/x
  3. Step 3: Cross multiply
    108,212.20x = 149,310.18 × 63,476.20
  4. Step 4: Simplify right side
    108,212.20x = 9,477,642,847.72
  5. Step 5: Solve for x
    x = 9,477,642,847.72/108,212.20
  6. Step 6: Final answer
    x = 87,583.87

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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.