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Finding the Fourth Proportional to 111,851.94, 167,777.85 and 40,779.90

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Solution

The fourth proportional to 111,851.94, 167,777.85 and 40,779.90 is: 61,169.83

Step by Step Solution

  1. Step 1: Write the proportion equation
    111,851.94 : 167,777.85 = 40,779.90 : x
  2. Step 2: Convert to fraction form
    111,851.94/167,777.85 = 40,779.90/x
  3. Step 3: Cross multiply
    111,851.94x = 167,777.85 × 40,779.90
  4. Step 4: Simplify right side
    111,851.94x = 6,841,963,945.22
  5. Step 5: Solve for x
    x = 6,841,963,945.22/111,851.94
  6. Step 6: Final answer
    x = 61,169.83

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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.