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Finding the Fourth Proportional to 158,538.37, 218,777.14 and 86,916.82

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Solution

The fourth proportional to 158,538.37, 218,777.14 and 86,916.82 is: 119,942.03

Step by Step Solution

  1. Step 1: Write the proportion equation
    158,538.37 : 218,777.14 = 86,916.82 : x
  2. Step 2: Convert to fraction form
    158,538.37/218,777.14 = 86,916.82/x
  3. Step 3: Cross multiply
    158,538.37x = 218,777.14 × 86,916.82
  4. Step 4: Simplify right side
    158,538.37x = 19,015,413,297.49
  5. Step 5: Solve for x
    x = 19,015,413,297.49/158,538.37
  6. Step 6: Final answer
    x = 119,942.03

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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.