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Finding the Fourth Proportional to 160,690.97, 221,753.50 and 89,070.77

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Solution

The fourth proportional to 160,690.97, 221,753.50 and 89,070.77 is: 122,917.64

Step by Step Solution

  1. Step 1: Write the proportion equation
    160,690.97 : 221,753.50 = 89,070.77 : x
  2. Step 2: Convert to fraction form
    160,690.97/221,753.50 = 89,070.77/x
  3. Step 3: Cross multiply
    160,690.97x = 221,753.50 × 89,070.77
  4. Step 4: Simplify right side
    160,690.97x = 19,751,755,326.90
  5. Step 5: Solve for x
    x = 19,751,755,326.90/160,690.97
  6. Step 6: Final answer
    x = 122,917.64

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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.