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Finding the Fourth Proportional to 111,881.66, 167,796.39 and 71,779.46

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Solution

The fourth proportional to 111,881.66, 167,796.39 and 71,779.46 is: 107,652.45

Step by Step Solution

  1. Step 1: Write the proportion equation
    111,881.66 : 167,796.39 = 71,779.46 : x
  2. Step 2: Convert to fraction form
    111,881.66/167,796.39 = 71,779.46/x
  3. Step 3: Cross multiply
    111,881.66x = 167,796.39 × 71,779.46
  4. Step 4: Simplify right side
    111,881.66x = 12,044,334,264.15
  5. Step 5: Solve for x
    x = 12,044,334,264.15/111,881.66
  6. Step 6: Final answer
    x = 107,652.45

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Why These Related Problems?

These problems maintain the same ratio (1.50) or explore similar proportional relationships. Practicing with related ratios helps build understanding of proportional relationships.