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Finding the Fourth Proportional to 67,283.64, 92,179 and 64,761.28

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Solution

The fourth proportional to 67,283.64, 92,179 and 64,761.28 is: 88,723.35

Step by Step Solution

  1. Step 1: Write the proportion equation
    67,283.64 : 92,179 = 64,761.28 : x
  2. Step 2: Convert to fraction form
    67,283.64/92,179 = 64,761.28/x
  3. Step 3: Cross multiply
    67,283.64x = 92,179 × 64,761.28
  4. Step 4: Simplify right side
    67,283.64x = 5,969,630,029.12
  5. Step 5: Solve for x
    x = 5,969,630,029.12/67,283.64
  6. Step 6: Final answer
    x = 88,723.35

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1.5x scale

Why These Related Problems?

These problems maintain the same ratio (1.37) or explore similar proportional relationships. Practicing with related ratios helps build understanding of proportional relationships.