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Finding the Fourth Proportional to 86,796.66, 119,788.29 and 52,807.59

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Solution

The fourth proportional to 86,796.66, 119,788.29 and 52,807.59 is: 72,879.89

Step by Step Solution

  1. Step 1: Write the proportion equation
    86,796.66 : 119,788.29 = 52,807.59 : x
  2. Step 2: Convert to fraction form
    86,796.66/119,788.29 = 52,807.59/x
  3. Step 3: Cross multiply
    86,796.66x = 119,788.29 × 52,807.59
  4. Step 4: Simplify right side
    86,796.66x = 6,325,730,905.12
  5. Step 5: Solve for x
    x = 6,325,730,905.12/86,796.66
  6. Step 6: Final answer
    x = 72,879.89

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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.