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Finding the Fourth Proportional to 108,958.72, 150,359.68 and 61,210.88

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Solution

The fourth proportional to 108,958.72, 150,359.68 and 61,210.88 is: 84,469.13

Step by Step Solution

  1. Step 1: Write the proportion equation
    108,958.72 : 150,359.68 = 61,210.88 : x
  2. Step 2: Convert to fraction form
    108,958.72/150,359.68 = 61,210.88/x
  3. Step 3: Cross multiply
    108,958.72x = 150,359.68 × 61,210.88
  4. Step 4: Simplify right side
    108,958.72x = 9,203,648,329.32
  5. Step 5: Solve for x
    x = 9,203,648,329.32/108,958.72
  6. Step 6: Final answer
    x = 84,469.13

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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.