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Finding the Fourth Proportional to 86,803.18, 119,791.80 and 50,992.88

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Solution

The fourth proportional to 86,803.18, 119,791.80 and 50,992.88 is: 70,372.18

Step by Step Solution

  1. Step 1: Write the proportion equation
    86,803.18 : 119,791.80 = 50,992.88 : x
  2. Step 2: Convert to fraction form
    86,803.18/119,791.80 = 50,992.88/x
  3. Step 3: Cross multiply
    86,803.18x = 119,791.80 × 50,992.88
  4. Step 4: Simplify right side
    86,803.18x = 6,108,528,882.38
  5. Step 5: Solve for x
    x = 6,108,528,882.38/86,803.18
  6. Step 6: Final answer
    x = 70,372.18

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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.