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Finding the Fourth Proportional to 207,961.94, 287,000.77 and 117,284.82

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Solution

The fourth proportional to 207,961.94, 287,000.77 and 117,284.82 is: 161,860.55

Step by Step Solution

  1. Step 1: Write the proportion equation
    207,961.94 : 287,000.77 = 117,284.82 : x
  2. Step 2: Convert to fraction form
    207,961.94/287,000.77 = 117,284.82/x
  3. Step 3: Cross multiply
    207,961.94x = 287,000.77 × 117,284.82
  4. Step 4: Simplify right side
    207,961.94x = 33,660,833,306.95
  5. Step 5: Solve for x
    x = 33,660,833,306.95/207,961.94
  6. Step 6: Final answer
    x = 161,860.55

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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.