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Finding the Fourth Proportional to 108,589.62, 149,859.68 and 60,858.35

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Solution

The fourth proportional to 108,589.62, 149,859.68 and 60,858.35 is: 83,987.88

Step by Step Solution

  1. Step 1: Write the proportion equation
    108,589.62 : 149,859.68 = 60,858.35 : x
  2. Step 2: Convert to fraction form
    108,589.62/149,859.68 = 60,858.35/x
  3. Step 3: Cross multiply
    108,589.62x = 149,859.68 × 60,858.35
  4. Step 4: Simplify right side
    108,589.62x = 9,120,211,802.74
  5. Step 5: Solve for x
    x = 9,120,211,802.74/108,589.62
  6. Step 6: Final answer
    x = 83,987.88

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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.