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Finding the Fourth Proportional to 108,953.90, 150,370.39 and 61,207.30

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Solution

The fourth proportional to 108,953.90, 150,370.39 and 61,207.30 is: 84,473.94

Step by Step Solution

  1. Step 1: Write the proportion equation
    108,953.90 : 150,370.39 = 61,207.30 : x
  2. Step 2: Convert to fraction form
    108,953.90/150,370.39 = 61,207.30/x
  3. Step 3: Cross multiply
    108,953.90x = 150,370.39 × 61,207.30
  4. Step 4: Simplify right side
    108,953.90x = 9,203,765,571.85
  5. Step 5: Solve for x
    x = 9,203,765,571.85/108,953.90
  6. Step 6: Final answer
    x = 84,473.94

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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.