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Finding the Fourth Proportional to 124,783.56, 172,200.87 and 68,194.89

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Solution

The fourth proportional to 124,783.56, 172,200.87 and 68,194.89 is: 94,108.71

Step by Step Solution

  1. Step 1: Write the proportion equation
    124,783.56 : 172,200.87 = 68,194.89 : x
  2. Step 2: Convert to fraction form
    124,783.56/172,200.87 = 68,194.89/x
  3. Step 3: Cross multiply
    124,783.56x = 172,200.87 × 68,194.89
  4. Step 4: Simplify right side
    124,783.56x = 11,743,219,387.55
  5. Step 5: Solve for x
    x = 11,743,219,387.55/124,783.56
  6. Step 6: Final answer
    x = 94,108.71

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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.