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Finding the Fourth Proportional to 86,712.42, 119,663.11 and 50,902.42

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Solution

The fourth proportional to 86,712.42, 119,663.11 and 50,902.42 is: 70,245.32

Step by Step Solution

  1. Step 1: Write the proportion equation
    86,712.42 : 119,663.11 = 50,902.42 : x
  2. Step 2: Convert to fraction form
    86,712.42/119,663.11 = 50,902.42/x
  3. Step 3: Cross multiply
    86,712.42x = 119,663.11 × 50,902.42
  4. Step 4: Simplify right side
    86,712.42x = 6,091,141,883.73
  5. Step 5: Solve for x
    x = 6,091,141,883.73/86,712.42
  6. Step 6: Final answer
    x = 70,245.32

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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.