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Finding the Fourth Proportional to 160,689.22, 221,764.20 and 89,090.44

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Solution

The fourth proportional to 160,689.22, 221,764.20 and 89,090.44 is: 122,952.06

Step by Step Solution

  1. Step 1: Write the proportion equation
    160,689.22 : 221,764.20 = 89,090.44 : x
  2. Step 2: Convert to fraction form
    160,689.22/221,764.20 = 89,090.44/x
  3. Step 3: Cross multiply
    160,689.22x = 221,764.20 × 89,090.44
  4. Step 4: Simplify right side
    160,689.22x = 19,757,070,154.25
  5. Step 5: Solve for x
    x = 19,757,070,154.25/160,689.22
  6. Step 6: Final answer
    x = 122,952.06

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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.