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Finding the Fourth Proportional to 86,167.16, 118,927.74 and 55,910.01

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Solution

The fourth proportional to 86,167.16, 118,927.74 and 55,910.01 is: 77,166.89

Step by Step Solution

  1. Step 1: Write the proportion equation
    86,167.16 : 118,927.74 = 55,910.01 : x
  2. Step 2: Convert to fraction form
    86,167.16/118,927.74 = 55,910.01/x
  3. Step 3: Cross multiply
    86,167.16x = 118,927.74 × 55,910.01
  4. Step 4: Simplify right side
    86,167.16x = 6,649,251,132.68
  5. Step 5: Solve for x
    x = 6,649,251,132.68/86,167.16
  6. Step 6: Final answer
    x = 77,166.89

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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.