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Finding the Fourth Proportional to 86,798.91, 119,791.40 and 52,809.84

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Solution

The fourth proportional to 86,798.91, 119,791.40 and 52,809.84 is: 72,882.99

Step by Step Solution

  1. Step 1: Write the proportion equation
    86,798.91 : 119,791.40 = 52,809.84 : x
  2. Step 2: Convert to fraction form
    86,798.91/119,791.40 = 52,809.84/x
  3. Step 3: Cross multiply
    86,798.91x = 119,791.40 × 52,809.84
  4. Step 4: Simplify right side
    86,798.91x = 6,326,164,403.33
  5. Step 5: Solve for x
    x = 6,326,164,403.33/86,798.91
  6. Step 6: Final answer
    x = 72,882.99

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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.