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Finding the Fourth Proportional to 73,188.39, 100,999.98 and 39,654.39

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Solution

The fourth proportional to 73,188.39, 100,999.98 and 39,654.39 is: 54,723.06

Step by Step Solution

  1. Step 1: Write the proportion equation
    73,188.39 : 100,999.98 = 39,654.39 : x
  2. Step 2: Convert to fraction form
    73,188.39/100,999.98 = 39,654.39/x
  3. Step 3: Cross multiply
    73,188.39x = 100,999.98 × 39,654.39
  4. Step 4: Simplify right side
    73,188.39x = 4,005,092,596.91
  5. Step 5: Solve for x
    x = 4,005,092,596.91/73,188.39
  6. Step 6: Final answer
    x = 54,723.06

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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.