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Finding the Fourth Proportional to 123,612.21, 170,584.29 and 67,023.63

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Solution

The fourth proportional to 123,612.21, 170,584.29 and 67,023.63 is: 92,492.31

Step by Step Solution

  1. Step 1: Write the proportion equation
    123,612.21 : 170,584.29 = 67,023.63 : x
  2. Step 2: Convert to fraction form
    123,612.21/170,584.29 = 67,023.63/x
  3. Step 3: Cross multiply
    123,612.21x = 170,584.29 × 67,023.63
  4. Step 4: Simplify right side
    123,612.21x = 11,433,178,336.77
  5. Step 5: Solve for x
    x = 11,433,178,336.77/123,612.21
  6. Step 6: Final answer
    x = 92,492.31

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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.