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Finding the Fourth Proportional to 197,781.93, 272,871.92 and 111,728.34

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Solution

The fourth proportional to 197,781.93, 272,871.92 and 111,728.34 is: 154,147.18

Step by Step Solution

  1. Step 1: Write the proportion equation
    197,781.93 : 272,871.92 = 111,728.34 : x
  2. Step 2: Convert to fraction form
    197,781.93/272,871.92 = 111,728.34/x
  3. Step 3: Cross multiply
    197,781.93x = 272,871.92 × 111,728.34
  4. Step 4: Simplify right side
    197,781.93x = 30,487,526,933.53
  5. Step 5: Solve for x
    x = 30,487,526,933.53/197,781.93
  6. Step 6: Final answer
    x = 154,147.18

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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.