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Finding the Fourth Proportional to 108,965.27, 150,371.51 and 61,218.20

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Solution

The fourth proportional to 108,965.27, 150,371.51 and 61,218.20 is: 84,480.80

Step by Step Solution

  1. Step 1: Write the proportion equation
    108,965.27 : 150,371.51 = 61,218.20 : x
  2. Step 2: Convert to fraction form
    108,965.27/150,371.51 = 61,218.20/x
  3. Step 3: Cross multiply
    108,965.27x = 150,371.51 × 61,218.20
  4. Step 4: Simplify right side
    108,965.27x = 9,205,473,243.32
  5. Step 5: Solve for x
    x = 9,205,473,243.32/108,965.27
  6. Step 6: Final answer
    x = 84,480.80

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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.