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Finding the Fourth Proportional to 113,779.46, 170,696.56 and 43,658.78

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Solution

The fourth proportional to 113,779.46, 170,696.56 and 43,658.78 is: 65,498.67

Step by Step Solution

  1. Step 1: Write the proportion equation
    113,779.46 : 170,696.56 = 43,658.78 : x
  2. Step 2: Convert to fraction form
    113,779.46/170,696.56 = 43,658.78/x
  3. Step 3: Cross multiply
    113,779.46x = 170,696.56 × 43,658.78
  4. Step 4: Simplify right side
    113,779.46x = 7,452,403,559.80
  5. Step 5: Solve for x
    x = 7,452,403,559.80/113,779.46
  6. Step 6: Final answer
    x = 65,498.67

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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.