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Finding the Fourth Proportional to 123,788.84, 170,832.12 and 67,203.92

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Solution

The fourth proportional to 123,788.84, 170,832.12 and 67,203.92 is: 92,743.32

Step by Step Solution

  1. Step 1: Write the proportion equation
    123,788.84 : 170,832.12 = 67,203.92 : x
  2. Step 2: Convert to fraction form
    123,788.84/170,832.12 = 67,203.92/x
  3. Step 3: Cross multiply
    123,788.84x = 170,832.12 × 67,203.92
  4. Step 4: Simplify right side
    123,788.84x = 11,480,588,125.91
  5. Step 5: Solve for x
    x = 11,480,588,125.91/123,788.84
  6. Step 6: Final answer
    x = 92,743.32

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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.