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Finding the Fourth Proportional to 124,776.60, 172,181.34 and 68,187.84

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Solution

The fourth proportional to 124,776.60, 172,181.34 and 68,187.84 is: 94,093.55

Step by Step Solution

  1. Step 1: Write the proportion equation
    124,776.60 : 172,181.34 = 68,187.84 : x
  2. Step 2: Convert to fraction form
    124,776.60/172,181.34 = 68,187.84/x
  3. Step 3: Cross multiply
    124,776.60x = 172,181.34 × 68,187.84
  4. Step 4: Simplify right side
    124,776.60x = 11,740,673,662.91
  5. Step 5: Solve for x
    x = 11,740,673,662.91/124,776.60
  6. Step 6: Final answer
    x = 94,093.55

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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.